I won't ruin the game for anybody who hasn't played it yet, but I must make a serious point about it: It is even better than I expected. Everything about it feels amazing; it is as close to perfection as a video game can be, and totally worth the time and effort that Rockstar have gone to to develop it over the last few years.
The park near our house is huge. Ovals, playgrounds, tennis courts and a big creek runs through the park; it's more of a suburb than a park. The park has many places to setup a party, many, many idyllic settings. My Dad had an abundance of places to setup the party table. He set the party table next to a stolen car.