If you often find yourself waiting for the queue of tips "popping" after you've finished tapping all of them, you can go into your social tab at the top right and all of them will pop at once!
I'm not sure if this was posted before but I just wanted to let everyone know since it has helped save me a lot of time - especially when I've come back to all my tables being full and I need to serve/cook stuff on my ovens.
EDIT: I just found out it has to be the Community tab of the social page
EDIT 2: Okay I think I understand this now... it seems to work for Community or Neighbor's tab as long as it refreshes loading the lists. So if you open the social tab and it already loads before trying it, it won't work, but for example if you just open the game and do it. Or I believe the lists refresh every couple minutes after you've opened and closed them. Also works with speeding up food queues, thanks Judy!