I've been to Tropical Smoothie a handful of times, and I am always hoping for a better experience than I had the previous time. I am often disappointed due to the unfriendly, slow, and unprofessional service. If you are in a rush, forget stopping in for a smoothie- it once took them 25 minutes for them to get out one smoothie. The dining room and drive thru were both not too crowded. They were even out of their usual cups and I was handed a generic (and smaller) styrofoam cup when my drink finally came out.
The two stars I did give is for the quality of the product. It's ALMOST (but not fully) worth the long wait when you take the first sip of your smoothie. The Beach Bum with white chocolate is their best drink in my opinion.
If the owners/management can improve their service, their ratings and reviews will certainly rise. For now, I'll stick to a McDonalds' smoothie.