Activity for Jazmyne

Me and my fiance have decided to go and elope and get our marriage license now we want to celebrate by having a dinner party and wanted to see if there were any other way ways or ideas to commemorate the moment that we both sign the paper

We need a venue (for the reception) in denver,CO that's good for 50 people any suggestions. It's just that I don't want to compromise the date but venues are getting further away From me