Here is a great tip I heard a few years ago, if eating at a buffet clean hands before you enter the restaurant and again as soon as you sit down to eat after serving your plate, I also do not let my kids touch the serving spoons just their plates. I am not a germophobe but when on vacation the last thing I want to do is get sick.
We do the same! I love the Crystal Palace and Chef Mickey's but it never fails to see people lick their fingers after they spooned their food and got stuff on them and continue to spoon more food. I've seen it happen on the ship a lot too. I keep the purrell bottle on the table and ask the boys to use them each time they sit down after getting more food. I've seen people use napkins wrapped around ketchup bottles and salt/pepper shakers but we haven't gone that far--we just wipe our hands after using them.