Gratuities for various vendors

How much do the following people usually get tipped?

limousine driver (if gratuity is included in package, do i tip at all)

photographer
videographer
hair (if they are coming to my house)
florist
mc/dj
photographer with dj for zap shots
valet (there will be 1 manager and 9 valets)
altar servers
musicians
catering manager

THANK YOU! i'm clueless!