I probably am not best experienced to review because I rarely venture restaurant chains. In fact, I avoid it. Example, if ordering delivery pizza - I will search for a local pizza joint than a common chain like Domino's or Papa Johns. I did, however, eat at Showmar's to meet up with a friend and it was my first time eating there.
Pro's: convenience and speedy-quick in getting our meal; large selection of menu items/dinners; reasonable prices; large portions, so good quantity for the price.
Con's: the food quality was what brings the rating down... my friend ordered his "regular" a lamb gyro dinner. Sorry... the lamb did not look appetizing. It look liked dried processed meat. Reminds me of the movie "Bridesmaids", LOL. I ordered the seafood platter and I knew it was fried but I didn't experience the sea-smell so I was quite confident that that the fish was not spoiled. I believe the fish was flounder but it was quite thin - well, actually VERY thin. At least they didn't overcook it. And baby shrimp. OK, I'll accept it. But I would have been more impressed if the shrimp was larger. Coleslaw was questionable... not sure how old it was... the mayo seemed kinda "sticky". Husband ordered the tenderloin dinner. We were advised that it was not beef but pork. I recommend that they specify that on the menu. It was "ok", but quite tasteless (not marinated).
Overall, for a quick/convenient inexpensive meal, it "filled the hole".