Hi, Brian's comments are right on. The Walforf course would love to have you but you will spend a lot to play, tip a lot, and for casual golf it is probably a waste of money as there are some other fun options close if you are staying at Bonnet Creek.
I work as a starter 3 months a year at Mystic Dunes which is the about the closest course to Disney outside of Disney. So I am pretty familiar with golf in the area.
Suggestions would include:
The 9 hole executive walking course at Disney, Oak Trail. Fun little course that can get crowded but handy and close.
http://www.wdwinfo.com/recreation/golf_oak.htm
For 18 holes most 15-25 minute drive courses will have decent prices in the summer, much higher in the winter. Close to Disney is Mystic Dunes...
http://www.mysticdunesgolf.com/ ...really pretty course that is not a "Florida Course" with lots of water but more links style...5 sets of tees so anybody can play it. Use WHITE pr GOLD tees if not a really good player.
Nice "Florida Course" that is close is Falcon's Fire
http://falconsfire.com/ ...lots of water, very green, sand traps everywhere!!
Orange Lake (HUGE time share place) just a few miles down 192 from Disney has 3 courses, one is lighted walking 9 hole par 3 that you can play past dark. Other courses are nice, especially the Palmer course.
If other questions, let us know...Ted