I have used Premier Inn carpark to visit ARI as hospital parking was a nightmare while the new building was going up but while staying there never noticed any signs of long stayers. Must check on ones nearer the airport where there are more likely to be long stayers. Not sure how happy the hotels would be if their overnight guests could not get in as any parking seems to get jammed pretty quickly. Before the present system some were obviously using the hospital car park and getting a bus into town. Anti social b’s as I was trying to park to visit which often took s long time.