Mario Tennis Open Online Multiplayer Questions

My wonderful children gave me Mario Tennis Open for Father's Day yesterday and while it is a fun game I am not sure I understand how the online multiplayer works. I am not the most technologically prone person around but when I play Mariokart 7 online I automatically get set up with opponents. When I tried to go online with Mario Tennis Open I had to create a room and then sat around waiting for a few minutes but was never matched up with anyone. Is there not a huge online audience for the game or can you only play against people on your friend's list or how does it work?

I cant answer your question, cuz I dont have the game. However, go over to gamefaqs.com (gamespot's sister site) and there will be an individual forum dedicated to the game, instead of a general 3DS forum. Someone will be able to answer your question over there.

Awesome. Thanks for the help.