We love FW! Even though we had our own vehicle, we did use the bus system a few times. Although it is a little longer to get around, it isn't too inconvenient. The only time you might not be happy with it is if you choose to leave a park at closing with everyone else. Then you will notice the inconvenience if you have to wait a little longer for a bus due to volumes. Disney is usually quite good at keeping track of wait times and rider volumes and will call more buses in to keep up. Plan a little bit to make sure you give yourself enough travel time, and use the time on the buses on the way out to decide what to see and where you'll go first, and on the way back to chill out, talk about the day, and let the Disney drivers worry about traffic etc. We actually used the boat to MK more often, hopped on the monorail to Epcot from MK etc. It was all part of the magic for us.
There are so many great things about FW that you need to allow time to discover! The theming throughout, trading posts, pony rides, Trail's End, HDDR, horse barn, campfire, sing a long, Chip n Dale......
Go over to the campground thread - you'll get tons of info there!