[ Her smile brightens. ] Count me in! I only got here a couple of days ago, and it sounds like this'd be a great way to make some new friends.

[ Taptaptap goes the hand at her chin. ]

Thinking about it a little more ... something like a scavenger hunt would be fun, but it'd take people away from the main event. That is to say, from the party. So I'd probably say ...

The sandcastle competition. It's creative; people could work solo or together; you could either buy some small, cute prizes or ask people to donate ...