Sounds like a blast! One time, I hitched a ride out to the island because my bro never picked me up. I had no idea where I would sleep or where to go. I just skipped from party to party, concert to concert. We met up later at a party and he made it up to me by staying relatively sober while I got wasted.
I'll be in South Padre again this year definitely. Last year was fun except the first night where I rode a mechanical bull and split my chin open, then proceeded to hit on a girl in the back of an ambulance getting treatment out front. Then having to drive an hour to get to a hospital in the middle of nowhere. I remember none of this by the way. I heard about it the next morning from my friends.