Characters sometimes learn lessons about topics like friendship and responsibility, but in general the show is intended to entertain and amuse rather than convey specific positive messages. The fact that the twins suddently become popular after getting a cool place to live (the Tipton Hotel), sends iffy messages about what's important in friendships.
The twins cruise girls like they're shopping for candy ... but they're not really old enough to act on anything in an inappropriate way.
Plugs for other Disney products can be found. Material wealth is celebrated.