Can any recent OMH's (or people in the know) help?Here's what I haveDJ Jeff Hill - Owns his own business (no tip??)DJ's Assistant (tip??)Photographer Kate McElwee - Owns her own business (no tip??)Photog's Assistant (tip??)DOC - Owns her own business (no tip??)DOC's Assistant (tip??)And if I do tip... how much? I had always hear that if someone owns their own business, you don't have to tip them, and frankly, I'm starting to run low on cash. Thoughts?