Is it outdoor or indoor ?

A mix of both, outdoor and indoor areas. Its nice to be able to get out of the heat and into the air conditioning inside all indoor facilities.

It's an outdoor theme park with indoor rides.

There are both outdoor and indoor rides. Most of the exhibits are indoors. You can alternate between indoor and outdoor rides and exhibits. Plan your route according to what you want to see. Budget for some extra time as you need to walk quite a bit between different areas.

All of the rides and shows are indoors but you do have to walk outside to get from one location to another. The Around the World experience is outdoors featuring bars/restaurants and gify shops in each country.

Both. Bring an umbrella or poncho in the rainy season

Both

Test track is the only one that is indoor out door ride. Everything else is indoor. Ranges rrom 4d movies for pixar to being spun reallu fast in mission to mars, mexico is a slow boat ride, nemo is a slow electric ride, living with the land is a boat ride .. paris china and canda are movies, and norway is the frozen ride but its still a slow boat ride. Elen's electric is closed for the new gardians of the Galaxy ride.

All of the rides at Epcot are indoor; however, there are a lot of "countries" set up that you have to walk through, with few indoor activities. I would suggest wearing and keeping a poncho handy at all times.