@Dad_Aint_Hip Most Nemo and BG tents and the 2020 REI QD SL series tents (in theory...see below) allow "fly first" (aka fast pitch) setup...maybe other brands too. Fly first is most useful for fly last when it is raining and you are taking down the tent since it allows you to keep the body dry although I have never actually done this on the trail. It is also useful if you want a free standing "tarp" for bug less trips and you want to carry less weight. Haven't done that either. But it does need the factory footprint or something similar you hack up yourself since you have attach the footprint to the pole feet keep them spaced while there is no tent body to do that job. The BA footprints are a bit pricey although I got mine on sale. It is nice to have the fly first option as an idea but in practice you may never bother using it.
The REI QD SL 1 and SL 2 are a very light semi-freestanding tents that are a bit less expensive. I think they were both less that $300 last year although the footprint was extra of you want fly first. I suspect they will be back in stock before the REI Spring 20% coupon and will probably be on sale at some point.
My daughter got herself a QD SL2 last year and it is a nice tent although we haven't taken it out yet except to set it up in the back yard. I think she slept a night in it. Personally I like my TW UL2 better but the QD SL2 vestibule doors are easier to get in and out of. We had to fix hers up to make the fly first feature work because the REI's factory goofed up on the clips and put the wrong ones on the footprint. REI made it right but we had to replace all the clips with S2S repair clips. Semi freestanding is more of a pain that freestanding since you have to stake out the two foot end corners and you need to counter that with a stake at the head but it is less of a pain that a trekking pole tent where you have to fiddle with the pitch and it is more difficult to be consistent in small sites where the ground around is not flat. It just takes a bit more practice and patience.
If you can't use stakes, you use rocks...or you can guy out to trees and roots if you know a few knots..trucker hitch and a couple of half hitches works securely. Why you should carry extra guyline. I did this a few times with my TW UL2 on rock shelves in the Sierras and I had to partially do it camping in a small rock surrounded site in Desolation Wilderness with my Luna Solo trekking pole tent.