To clear some of the questions here:
The valentine event is level restricted to lvl 17 ( why ) because the items that can be bought are lvl 17 restricted ( kissing booth and mailbox ) once your lvl 17 the event automatically unlocks and you can start your first mission. ( you need those items in the first mission. thats why its lvl 17 related ).
Added: All goals are easy to get from buying or crafting only however the problem is if your lvl 17 you don't have the higher items yet so someday it stops for you because you cant complete the orders anymore because they ask higher level requirements.
example:
The pizza oven.
The jewelery.
Some fields like the bee, and train station asking lvl higher level requirements to and this is the bug for the lower level players.
How they want to resolve this well they can't.
Get more levels as fast as possible is the only solution because what you cant make you cant buy either.
Missions ( so far ):
Piper Sanders missions:
Mission 1: A secret admirer: buy 1 valentine mailbox (5 gems with a reward 3 gems back) most of us will win a jewel hanger.
Mission 2: A Valentine's adventure: Find 1 rose, (reward 160 coins and 32 exp).
Mission 3: Looking for love: Find 1 letter and 1 heart shaped box (reward 160 coins & 32 exp).
Mission 4: Presents Aplenty: Turn in 1 Valentine's Collection ( reward 160 coins & 32 exp ).
Mission 5: Hooked On You: Craft 1 Valentine's Bait, Find a Valintine's Wreath ( reward 160 coins & 32 exp ).
Morgan Primrose missions:
Mission 1: Season of love: 65 cheese, 10 roses. (rewards 2 valentine balloon pack).
Mission 2: Roses are red: give 20 letters, 15 heart shaped boxes, 120 bread, 40 dark chocolates (reward 2x Valentine's giftboxes).
Mission 3: A Teddy for Jed: 15 Pink Teddy Bears, 30 Gift Bags, 50 Scarves, 25 Wool (reward 2 giant pink teddy bears).
Mission 4:Hogs and Kisses: give 20 red bears, 10 giftboxes, 150x flour, 180x bacon (reward 1 valentine's picnic).
Mission 5:A foxy valentine: give 7 gift bags, 14 anchovies, 12 catfish, 10 bass (reward 1x love pont).
Mission 6:Won't you be mine: give 8 white bears, 10 valentine's wreaths, 20 iron ore, 15 silver ore (reward cupido white cat).
Is it worth it to give NO it will been taken off from the amount of turn in turns so you are been warned. ( its NOT worth it you should raise your turn in turns instead ).
After these missions there are no new missions atm.
Warning: if you are doing the mission where you need to give like the bread and cheese missions: once you say give the items they will be removed from you storage and transfering to the order from the mission ( you are unable to reverse this action ) given is gone ) so if you wonder where your found roses or letters are well now you know its gone..
( will be updated soon )
Where to find the items:
Day 1: (Roses): Craft items from the Dairy.
Day 2: (Letter): Craft items from the Bakery.
Day 3: (Heart Box): Craft items from the Chocolatier.
Day 4: (Teddy Bear PINK): Craft items from Studio.
Day 5: (Shopping Bag): Doing plane deliveries.
Day 6: (Teddy Bear RED): Craft from the windmill.
Day 7: (Valentines present box): Collect from the pigs.
Day 8: (Teddy Bear WHITE): Collect from sheeps.
Day 9: (Valentine's Wreath): Use Valentine's Bait on the pond.
Day 10: (Jewel hanger): Can be found in mine.
Day 11: (Flying cupido guys):Can be anything valentine related, its like the butterflies and the mole search en click on it to gain your loot.
Second question: ( all the pictures in the addon from the valentine event are to unlock Valentine related items, just like the butterflies and moles ) the kissing booth shows all the 10 pictures that are still locket ) if you have the kissing booth it unlocks all however if you dont have the kissing booth the pictures will be unlocked on different dates and this is for pure finding chances for the items ( now the roses and letter can both be found the rest not because its still locked ) and with the kissing booth it will unlock all and you can craft them your self, but to start crafting you need roses in the beginning.
One more thing once you have the kissing booth you still only have to wait for the timer to unlock all items to find them ( but if you have enough roses you can craft everything your self way quicker then waiting for the timer.)
Explaining kissing booth crafting + time :
to craft 1 letter you need 1 roses / 20m timer.
to craft 1 heart filled with chocolade you need 1 letter / 25m timer.
to craft 1 pink bear you need 1 heart filled with chocolade / 30m timer.
to craft 1 heart bag you need 1 pink bear / 35m timer.
to craft 1 red bear you need 1 heart bag / 50m timer.
to craft 1 valentine present you need 1 red bear / 1hr timer.
to craft 1 white bear you need 1 valentine present / 1.5hr timer.
to craft 1 valentine's wreath ( heart ) you need 1 white bear / 2hr timer.
to craft 1 jewel hanger you need 1 valentine's wreath ( heart ) / 3hr timer.
As you see you need the preview item to get the next one ( once you crafted them all you get items that will be valentine related.)
For the Valentine mailbox you need 1 letter to get a present ( its one time use only ), the letter can be found or been crafted at the kissing booth, once you sended the letter the box will poof away and you will receive a present, on this there is also a timer ( the times once you send a letter and receiving a present is set on 1 hr )
I hope this clearing some of your questions.
A free hint or tip, buying the needed items from newspaper and giving them to the mission also helps ( it cost cash but it goes 50% faster then only making them ).
The List of items that you can win by turn in from the items you find ( so far ): 10 decorations and 2 pets.
Valentine's Cupido white Cat.
Valentine's Puppydog.
Valentine's Basket.
Valentine's Picnic.
Valentine's Balloons.
Valentine's Gift Boxes.
Valentine's rose arch way.
Giant Valentine's Bear.
Heart-shaped Topiary.
Rose Lantern.
Heart Candles.
Romantic pond.
This is what i found so far, if you know other items let me know so i can add them to the list.
( for non paying players ) in time you can find them all ( just random chance )
( for paying players ) you can unlock them all with the kissing booth.