When enjoying a few cocktails, be smart, and don't get sick. Here's a few ideas to avoid head and tummy aches.
Drink Water. Everyone who's mature enough to have a drink should be mature enough to drink some agua along with it. Drink a glass of water before and after every drink, and gulp down a few more before bed. If you get way carried away, to the point of vomiting (another source of dehydration), drink a Pedialyte to replenish yourself.