One if my favorite villagers is in my campsite. Problem is.. My town just had its 10th villager move in (shes literately still in boxes!). Because my town is full, is there any way to keep him?
Like previously said, it's impossible. And to confirm what Annika said, some campers will show up more often than others, so there's a chance you'll see him again. In my cycling town I've had Bones, Freckles, Chow, etc. show up 2+ times each within a relatively small amount of time with time traveling.