We have a TT with a kitchen slide. This was one of our initial concerns but the benefit of the slide FAR outweighs the little lose in space under the awning. I am not a big awning fan anyways. I will put it out in rain (not if very windy) or if the sun is beating on the side of the camper. Typically I put it in at night as I hate the bugs that paste on the underside due to the LED light strip under the awning rail.
Best thing to know is length of awning. Ours is probably 18-19' long. Covers the door, slide and goes up to the outdoor kitchen door. We love the set up.
