OK everyone let me tell you guys my whole situation so you can tell me who you think i should tip!The food- my sister in law's friend who does it on the side- the dinner is chicken alfedro- apps are stuffed mushrooms, salad, baked brie, pesto cheese ball etc... only 600 for 100 ppl so great deal!!!the dj- paid 750-owners own company is my brothers co-worker/friendth photographer- 7 hours for 1200, no charge for location change, sh gave us $50 off- owns hr companyso how should we tip???