In Scout's Honor, Vicky and a large scary woman were the counselor of the Cream Puffs. In this episode, Mrs. Turner was the counselor and leader, meaning that Vicky and the previous boss had probably quit at some point, or this was simply overlooked.
In the episode, "Who's Your Daddy?", Mrs. Turner mentions that she has earned hundreds of Cream Puff badges.
Mom and Dad betting themselves into contests and then slapping each other in the face.
Chester trying to eat wild animals.
People yelling "WHY DOES NATURE HATE US?" when nature goes after them.
Cosmo is allergic to nuts in this episode, however in previous episodes, he has eaten them before plenty of times without ill effect. It's possible that Cosmo's only allergic to a specific type of nuts and can eat other nuts as a result.
At the end of the episode when the Squirrel Scouts and Cream Puffs were swimming together in the pool, there are several girls and boys amongst them who were not part of the original groups.
When all the scouts were at the pool, Chester has shorter hair. It can be seen here.