Here's a general guide ...
Bartenders: 10 percent of the total liquor bill (to be split among them)
Bathroom attendants: $1 to $2 per guest
Catering manager: $200+ or a personal gift
Chef: $100+
Coat check attendants: $1 to $2 per guest
Hairstylist: 15 to 20 percent
Hotel chambermaids: $2 to $5 per room; $10 to $15 if you used a
suite as your dressing room
Limo or bus drivers: 15 percent
Maitre d'hotel or headwaiter: 1 to 3 percent of food and beverage fees
Makeup artist: 15 to 20 percent
Musicians: 15 percent of fee for ceremony musicians; $25 to $50 per musician for reception
Photographer/videographer: If you're paying a flat fee with no overtime, $100
Valet or parking
attendants: $1 to $2 per car; 15 percent for valet parking
Waiters: $20 and up each (distributed by the catering manager or maitre d')
Wedding planner: 15 percent of fee or a personal
gift