Oh, if you want help spending your money, you've come to the right place!
While I can't really argue with the "family first" mentality, here are some ideas.
Have you looked to see if you can get a used one? I'm not sure where to look exactly, other than maybe craigslist, but maybe some of our SCA friends here might know. Or maybe you can borrow one and try it out?
Also, we bought ours with the same worries. Kat and I weren't anywhere near engaged (let alone married), and we went in 50/50 on this purchase together, not knowing if we were even going to actually go to Pennsic. But you know what? We've used it quite a bit for other things, such as a sun-shade for the 4th of July parties, and as a cast-tent at VARF.
We're very satisfied with our Panther, and consider it a good purchase.