That's one thing I like about my Slater UL3+, it's side and end door, the side having a very large vestibule for a common tent and the end door having a vestibule that's big enough to have a few people play cards underneath and is about half the size of the actual tent in volume. That's a pretty big tent to start with.

The side entry vestibule is a lot larger than it looks in pics. I'd put it as easily large enough to cook under with an MSR micro-rocket stove if it was raining.



And the vestibule chamber is also a good bit larger than it looks in pictures. Large enough that we put all our gear in the Little Joey Chairs inside it along with the cooler, a cooking rack that sits over the camp fire that is set up with more gear on it to keep it dry, etc. etc. and still have plenty of room to get out, cook under it, etc. The pictures are very deceptive.