I’ve bought the basic Coleman shelter (2 in fact) and they are showerproof not waterproof. The walls are OK and if fitted properly to a well put up shelter are OK but not great.
If you tie them down properly they will withstand more wind than most gazebo’s.
The limitations ment I ended up buying the deluxe shelter though. These are properly waterproof and the walls will zip to a groundsheet to make a very windproof (but not sealed) and waterproof shelter that you can sleep in if you wish.
They are more expensive for a reason but build quality is worth it if you’re going to use it a fair amount.