We leave our 27rlws at a resort in Alberta all year. We put the slides out
1 May and close them 30 Sept. which is the norm for everyone (154 campers). Suggestions include:
Treating the seals a couple of times during season as the rubber is exposed to the sun all the time.
Get up on the roof at the end of the season "Before" closing the slides to ensure there are no branches, pinecones, dead squirrels, etc. laying on top that may jam between the slide and the wall.
Close the slides when the weather has been warm and sunny. Don't want to draw in rain soaked slides that will increase interior humidity for the winter.
Enjoy your mobile cottage