I’m retired and have lots of free time. But…3 hour event??? And you have to group and play with these folks for hours? Uh…nope.
just remember to take your blood thinner and stretch.
That assumes the bottleneck is monster killing and not annoying “I run here, you run there, then we have to click 17 items in the correct sequence to advance” mechanics. Or what ever silly thing the “puzzles” turn out to be. Knowing QA folks in my past they usually find ways to cut out all the non-essential steps to get thru testing. After playing thru the 117th iteration max efficiency is needed to maintain even minimal sanity.