My first hunt in Alaska was in 1980 when 5 of us went on a DIY caribou hunt out of King Salmon. We brought all of our gear from our homes in Montana, and we brought a large umbrella tent for all of us to sleep in and a small 2 man tent for our gear. The umbrella tent had a large enclosed front area where we could cook and get in out of the rain.
The umbrella tent also had a floor, but we got a large sheet of plastic in King Salmon that I told the first load of our crew that flew into our camp to put the plastic under the tent. They didn't, they tried to tie it over the tent for a rain fly, which blew away, and as a result water from the tundra under our tent seeped through the floor, and we had a wet week.
For over 20 years I had horses and packed my wall tent into Montana's back country for elk, moost, and bighorn sheep hunts. We also used it many years in eastern Montana on antelope hunts for a couple of us to sleep in and for a dry place to cook and eat. It doesn't have a floor, but I always put tarps down everywhere except under the wood stove.
If your tent doesn't have a floor, you need to at least put a tarp down to help keep your sleeping area clean.
Several years ago I went on a guided Brown Bear hunt in SW Alaska. My guide had a 2 man tent for each of us. They had floors and rain flys and were tucked in the alders, but we couldn't stand up in them, and we had to cook and eat outside. I prefer a tent that I can stand up in.