Tips - how much at a buffet?

[spidey07]

Still do 15-20% at a buffet?

 

[Scarpozzi]

It depends. Is there a fountain drink machine? Or is there a server coming around.

 

[ryzmah]

If the server is getting drinks and doing a good job of clearing away finished plates when you aren't at the table, I'd leave a dollar per person. If they aren't, I wouldn't tip.