Unorthodox wedding idea, friends only wedding

Besides pure cost, I don't think there's anything wrong with this! By cost, I mean are you planning on hiring a DJ, photographer, caterer for both? Or is it more of a "let's go to a resort and party for a week!" type of thing? I don't think your friends would be offended by this, and if they are, they have other issues to sort out lol

I'd probably make a spreadsheet and gather the real cost of everything and make sure it's something you guys are willing to / can afford, but other than that, it sounds awesome to me! Go for it!

Do you want to plan 2 weddings? You may tire after 1. But, you can also make the 2nd more casual. In Las Vegas, you just need 24 hrs to get the U.S. license, and hotels can easily put people geographically together. Most resorts have Hosts to help you book group activities, etc., and there's always low cost/high cost options. One other possible problem, is that if a wedding ceremony is not planned, your friends may think this just a friends trip. They may have other ideas for their annual vacation. But, if you keep to a short weekend in a low cost month, could be fun and accessible for many. Best wishes.