Hi,
I'm working on my dinner seating chart for the reception, and am having a hard time trying to figure out where to place everybody (a common issue, I imagine).  One thing I'm trying to figure out: I know our dj and wedding photographer are expecting a meal as well, and I'm not quite sure where to put them.  Is it ok to put them at a table with friends and/or family? I'm having a small wedding (80-90 people), so this is pretty hard. I don't want any other guests to feel like they got "stuck with the dj".  
Also, what is the standard gratuity for the vendors?  15%?  20%?  
Thanks so much!