Bartenders—$ 1-$2 per drink. Cocktail Waitresses—$ 1-$2 per drink. Gaming Dealers— For table games, a chip representing your betting increment. In poker, $1 per winning hand, more for large pots. Hotels— Bellmen & doormen: $2-$ 3 for each bag. Concierge—$ 5 or more depending on task. Housekeepers—$ 3-$5 per day. Pool attendants—$ 1-$2. Room- service attendants— 15-20 percent. Valet—$ 2-$ 5. Restaurants/Servers— 15-20 percent. Buffet/Servers—$ 1 per drink. Taxi drivers— 15-20 percent, as drivers are taxed on their tips by the government. Tour guides—$ 2-$10 depending on the length of your tour and how helpful and informative your guide is.