I've had three Dodge Caravans over the past 20 years. I usually buy them about 2 years old with low mileage.
I like to ride with the windows open and every van I had the headliners peels off the foam coatings on the "ceiling.". You can't glue cloth onto foam and expect it to stay there in South Texas weather. It strarts to peel off by the wiindshield and the sunvisor and slowly works it's way back until it's all baggy and saggy.
Replacing the headliners is expensive and looks pretty funky. Probably will never buy another Caravan or upgrade to a Town& Country for this reason.