Does this theater accept Fandango tickets? Like if I buy a ticket online will they accept it?

I think they do. I always purchase my tickets inside at the kisko.

Yes. Fandango even lists Cinemark in Gulport with the times of each movie...

Yes

As far as i know... they have a kisko inside the lobby so u should be fine...

I did once about 4 years ago. Now i just buy them at the counter