We don't know the final headcount but there should be plenty of space in the cabins no need for truck bed. At the worst someone puts out a bedroll on a couch or the floor. The big cabins can house alot of guys, I can't see that everything is fully filled so far, its just hard to reach Mike some days.
I called for our cabin early cuz (I'm OCD yep) I've found the easy housing for some of the trips such as Golden and Harlan to be booked out by other groups or by our group very early in the year. JRay usually brings someone and I may or may not have Wendy with me, depending on if her mom has a surgery and can/cannot take our kids, so we locked in early.