My DS10's was a couple of week's ago.
His birthday party was on that first weekend,so that kept us busy that weekend. His best friend ended up spending 6 nights of the vacation with us(we broke it up in the middle though). In some ways this was great, but then I had to take care of 2 of them, when I am use to only the one, but they kept each other busy.
They were allowed some TV, rental movies and videogames, but they had to equal the time spent inside with playing outside. They scootered, played with water guns/sprinklers, played football and basketball. We didn't go away or do anything special. I did give my DS10 one day of shopping, with a limited dollar amount towards the end of vacation, for helping me get some stuff done (when his friend wasn'there).
I got him to swim one day, but the pool was still a little cool for him(it's not heated), so he only spent maybe 30 minutes in there.