We use the ART on all our trips... Usually we stay on Katella but once we stayed on Harbor and Orangewood..
The ART is $5. per day for Adults.. $2. for kids under 10. They also do cash fares , but you need the correct change and some of the drivers might argue with you.. but cash is accepted.... $5. ticket you can use it as many times as you like
.. they have access for wheelchairs..
They will run before park opening and after, but not sure of the exact hours..
They can get very busy .. specially at opening and closing times...
attached is the link to the ART and it will give you a map of the area , which hotels it services... times and prices...
http://rideart.org/
I have heard many people complain about the ART . and I have seen a lot of rude people trying to push in the lines etc... but on the whole most people are nice.. been on the bus where everyone was talking and laughing with each other and been on one where no one looked up..
If you have a stroller make sure you get your child out of it and its folded before the bus arrives... that will make for a faster and smoother boarding...
if its real busy I always make my son sit on my lap.. some people dont ...
so like everything good and bad.. but for us worth it...
Hope you enjoy your trip..