I just recently moved to Columbia. Where I'm from, people usually hung around stores like this to play trading card games like Magic: The Gathering, is this the case here?

Yes. On Tuesday nights they have a free get together for people who play the commander format (EDH) and Friday nights they have the usual assortment of formats, modern, draft, sealed, and standard. Plus, if you and your friends need a place to meet up and play MTG or any other tcg or board game of the like, they are happy to accommodate.

Yes. Me and my playgroup come here all the time to play