KDO:
Yep. Only the fruit trees and grass/clover. I keep the area under the drip line free of growing grass/clover/weeds. The trees are a mixture of apple, pear, peach and a few cherry trees. I tried a few apricot trees and never had luck with them. The soil is VERY sandy, that's one of the problems. All trees with the exception of peach and cherry are semi-dwarf. I believe the peach and cherry are standards. (going from memory)
I planted them 5 years ago, but realized that I needed to move them 2 years after I planted them. I had a guy come in with a tree spade and relocate them in 2008 - cheaper than buying new ones. I did lose 2 out of the 25 that were moved, but that's what happens when you move them in August..... I had picked all the developing fruit off of the trees to lessen the stress, but it still wasn't enough for a few of them. Moving a garden hose around was an all day affair to water them once a week.
The trees are planted on 15' centers (15' between each tree in every direction).
I never thought to look up the watering requirements.

I'm right on the edge of Zone 5a and 5b if that matters, technically in 5b.