You can go to any Disney hotel you wish to simply check it out,people usually go to the expensive hotels and not the POP or All Stars,but you're free to check out the hotels if you want.Disney knows you'll probably end up eating there or seeing what hotel you would like to stay on a future trip.You can take your car to the hotels or another option is to park at Downtown Disney and take the buses.Remember many of the hotels,especially the deluxe hotels also are very close and accessible to some of the parks like the Polynesian,Contemporary and Grand Floridian which have the monorail line to magic Kingdom and the Y&B Club,Boardwalk,Swan and Dolphin accessible to EPCOT and Hollywood Studios via the boats or walking.The POP and All-Stars being further away are only accessible by bus.