It's almost certain that I've seen 'Carry On Camping' more often than any other film. It's a comedic comfort blanket. I can recite the dialogue along with the actors with my eyes closed.
Quite why it holds such interest for me I don't know. It is neither the best scripted nor the most inventive of the Carry On series. But it is the funniest. All of the best Carry On regulars (barring Kenneth Connor and Jack Douglas) are present and in fine form. The gags are usually on target and often laugh-out-loud funny. 8/10.