Spinoff to tipping thread on BHB

I have no idea what price range I'm supposed to be tipping my vendors and assistants:

Maitre'd
Bridal Assistant
Photography
etc..
who are you supposed to tip on day of and how much???

Maitre D is roughly $3-$5 per person.

Bridal assistant- i'd say between $100-$150

photog- i've seen things from 10% to 20% but that is ludacris. i myself need to research this more

dj/band gets tipped
florist (??)
photog
makeup artist/hair artist

and i'm drawing a blank if there are more lol