Nothing to Plan

We couldn't get the date and location we wanted for the small (~25 guests) 2020 wedding we had been looking to do, so we've decided to do a full sized wedding with the 75 people we had originally wanted to invite. there is one location in Rocky Mountain National Park that can hold up to 100 people, and two that can hold up to 60 people, andt he permit is $250 no matter how many guests you have. This is still an affordable option, and would get us closer to the wedding we (read: I) had originally wanted. We would save about $6,000 on the venue, expensive catering, and decorations (as you can't have any in the park). It's a really good decision for us, but we can't book the date at the park until a max of a year in advance, so I don't really have any planning I can do until about June 19th. I really want to be doing stuff, and I've tried looking into options for a small reception, but without the date set in stone, there's not much I can do. I'm dying here.