I love how my tent has a huge vestibule for changing clothing or keeping dry from the rain. (Big Agnes Wyoming Trail 2) Been the perfect tent for my dog and I. :
GP Small Tent Vestibule for U.S. Army
Black Diamond Eldorado Tent Vestibule: 2-Person - Hike & Camp
Explore the Different Types of Tent Vestibules and Their Uses
Firstlight 2p Vestibule
Kodiak Canvas Wing Vestibule Accessory for 10x14 Flex-Bow