how much tip do you leave the server if you eat at the buffet? i get a comped meal, so the meal is free for me. i'm used to tipping 10%-15% at the full-service restaurant, but i don't know what is a good percentage or amount to tip at the buffet, where the server only removes your empty plates. i don't ask for refills. i also don't know if they keep the tip, or split it with the other servers.