The camper van is an old car and optically a little bit broken, some warning signs appeared which made us a bit worried, we weren’t informed about them ahead, but we made it to Haleakala and everywhere we wanted. We also rented a camper van at Oahu, Maui was more relaxed camping for us, it was easy to find cosy free overnight spot like southern of Makena beach, a lot campers over there. Unnecessary stressful was that after 10 days of not reacting to car insurance we sended, an evening before check in I got finally answer that insurance is not good (it was in german, but international and for person in Oahu totally fine), we translated some details in travel stress and hurry and then it was fine. I also received check out information on check out day which is too late as in camper van you might not have wifi.