Kissimmee/Poinciana area...vacation in June?
For BBQ I would check out 4 Rivers Smoke house. I like the burnt ends and messy pig sandwich myself but there are also other options regular pulled port, bbq chicken etc. All seating is outside, the place is small and there will be a line.
Since you'll be in Kissimmee area it's a drive to Winter park, you could make a nice saturday out of it and hit the winter park farmers market in the morning and get in line around 11:30 at 4 rivers.
St. Cloud has a nice establishment called the Catfish place, they serve up seafood and gator and have been around for a long time.
Also in Kissimmee is Fat Boys BBQ which I love as well.
South Orlando, Hunters Creek Area has some nice selections such as Mikado Sushi, fresh, quality and wonderful plating as well as Padrinos Cuban, Venzia bakery, and All Italian Market. All worth a check in.
13586 Village Park Dr, Orlando, FL 32837