I say keep it. Weather is going to be a factor in CO always, no way around it, especially in the spring and early summer. I don’t think we have any better shot the following weekend with respect to weather, it is a total unknown.
Then there is the schedule issue, my summer calendar got planned the day the RMSolo calendar dropped, including things that are difficult to arrange like childcare. I cannot attend the 16th for example, I have a family wedding planned, and the same story throughout other weekends during the whole season.
My $0.02, unless worker and participant safety is in jeopardy events should always go forward as scheduled.