When i'm with a group, i may have a beer or two. The typical option is Corona or sometimes Bud because that's what the uncle with the boat drinks, but if I remember to bring my own drink, Blue Moon, Shocktop or leinenkugel summer shandy works for me. I still drink mostly water and gatorade though, gotta stay properly hydrated. Beer can actually dehydrate you more, so can soda.
When i'm by myself, just water and gatorade