Photo studios are places intended specifically for conducting photo sessions. Spaces like these are often decorated in a particular style or have several different interior zones. Photo studios should be equipped with special interiors and backgrounds. Pay attention to how the studios are described, and to whether use of equipment is included in the booking price.
Dance is about movement. The venue for this kind of event should be spacious enough that everybody participating can feel free and not have to worry about bumping into one another. You might want to check whether it includes a changing room, shower, and toilet.