Replying to Sun Peaks BC and/ or Jasper in the summer?

so I'm done 14 days of work in the am, and going to be heading to Bass Coast festival, but that starts in the 1st, so I want to kill some time on the way down from Gande Cache Alberta.
I can do so either in Jasper, or Sun peaks. or 1 night/ day at both. I'm just wondering what sun peaks is like in the summer??
I'm planning on riding xc as well as renting a dh bike for a day or two.
And obviously I'd like to do some partying at night, Jasper is definitely the safer bet in that department

inb4 regionals
also inb4 pinkbike