Help?

I'm looking for something for John to ask Cam to go to/do with him on a Saturday afternoon in Washington as a sort of 'I have to go, but also I kind of want to, come with me?' It's not long after the repeal of don't ask don't tell, so it couldn't be something where they'd be read too easily as partners, I don't think. It's a first date, of sorts, but not explicitly a date.

Does anyone have any suggestions? Maybe it's cos it's nearly 11 on a Friday, but I'm stuck for ideas at this point.