I used my airport at VWL last month with no problems at all. It made it a lot more convenient since the broadband connection was in the living room, and I usually surf the web while laying in bed.
I also plan to bring it when we go to SSR in August... since all of our kids have laptops... and I will be surprised if they don't bring them along.
You can enable WEP if you are concerned with others using your broadband connection for free... but for some reason, I have had a hard time getting the WEP working between my laptop and the airport. I need to debug this to keep my network more secure.
/Jim