In all my years of using this Bibler I have never had any problems from water condensation. Todd Tex is an amazing fabric. Because it is a single walled tent with no pole sleeves, it is really easy to erect quickly - you do it from inside. This tent has amazing ventilation and can be used as a complete 4-season tent - snow to tropics! Mine is the older single door version. There is now a two door version which would be even better than mine. The single door version does not work well with the (extra cost) vestibule. I can imagine that the two door version (shown above) would work very well with one vestibule - I would not try to attach two. When I bought my Ahwahnee from the local Paddy Pallin store, the sales staff were a little dubious about condensation problems with a single wall. After my first outing in 100% humidity (fog conditions), I came back to tell the sales staff that there are NO condensation problems with this tent. Sometimes the poles may get a little moisture on them but I have never known any moisture to build up on the internal surface of the fabric. Bibler recommends seam sealing the external fabric seams with their sealer which is supplied. You can easliy sit up inside the tent. It is 45" tall at centre. Weight: tent, poles, fly, stakes, stuff sack, guy line: 6.5 lbs. The best tent I have ever owned by quite a wide margin!