No rain fly?
That's odd.
I don't have that one. I
had what I think was it's predecessor, the Coleman Sundome.
I probably just got lucky because it certainly didn't seem like quality, but that little tent was THE FUCKING BOMB. The shit I did to (and in..
) that poor tent you wouldn't believe. It was like the Bluesmobile. It finally said goodbye in a blinding gale, after sheltering us from hell for about ten hours, after a week on a beach in a place where trees grow crooked. We said fuck it, got the last of our shit out and ready to go, I grabbed the first rope to collapse the tent and the whole thing just tore to shreds in my hand. It was about ten years old at that point. Loved that fucking tent.
Had a bottom made of tarp plastic. Never leaked a drop. When it started raining sideways hard enough for it to drip in the top vents under the rainfly you had to bail it out though.
Otherwise, it's probably a fair inexpensive car camper tent. Coleman is pretty good for that. Take care of it and rig it right for your conditions and I wouldn't be surprised if it keeps you happy for a while.