I have just re-read the OP's first post.
I would suggest if at all possible, wait for night time, sit in a wardrobe, or whatever, but don't load these in a changing bag, especially if you are new to sheet film loading.
These units are slightly fiddly, to say the least, you will spend a reasonable amount of time loading sheets and stacking up the loaded septums prior to then loading the loaded septums into the holder.
I, and most people I know, including myself, slowly get hot sweaty hands in a changing bag. This does complicate things a bit and it will be a bit of a squeeze.
A changing tent should be alright, but I have never found a problem in most places, of finding a dark space for film loading.
I have sat in a sidecar with a walking stick for a tent pole, which was draped over with a double layer of tent canvas, as a darkroom.
Mick.