chrisd596 --
the WDW trail ride was pretty inexpensive from what i remember, but i don't remember how much it was...
as for the grand cypress, i remember it being "reasonable" for riding....(which is of course, never all that reasonable)...
at the time we were there, they had two different stables in different parts of the property....on one side, English stables...
and on the other, western stables...
i suggest you call them and ask about prices, what's available, etc.
and they're less than 3 miles from WDW....they're actually just outside of WDW....if you go out the road that goes past saratoga springs, sort of out the back way, you dead end into a road, the other side of which is the villas of grand cypress property....
it's really the closest property to WDW, but the entrance to WDW on that side is an unmarked one, that only employees use....
anyway, go to this website to learn all about the riding at the villas of grand cypress
http://www.grandcypress.com/equestrian_center/equestrian_vacations/