I didnt go to kapas for a looong looong time already. so i am not sure about the car park issue. As for rooms, there are twin, triple, quad sharing rooms or even dormitory where a lot of people can sleep in (double decker bed). it all depends on what the resort have and you need to talk to them about it. Tips and suggestions, be responsible when you travel, do not litter into the sea. Use minimum sun screen when u know you are about to enter the water and dont step onto any kinds of corals. Refrain from picking up any dead corals or seashells. Last but not least: take nothing but pictures, leave nothing but footsteps.