I really like to hang out at City Tropics. It has a great location (just west of the beach on 5th Ave), an amazing happy hour, really cool indoor/outdoor bars and a large array of food options so you can usually accommodate everyone in a group.
The food is decent and includes both normal bar food (burgers, sandwiches, salads, etc...) as well as a full menu and a sushi bar! The seating area is large and includes indoor and outdoor seating as well as a large sliding glass wall that allows them to take advantage of our wonderful Florida weather.
The Happy Hour runs from 11am to 7pm and offers $2 domestic beer, $2 well drinks and a great happy hour menu with a number of items for $5. Try the Tuna Sliders...they are really good!
On the negative side...the food is decent but not great. The sushi is fine...you can find better. The service (especially at the bar) is always friendly but sometimes slow.
Here is my recommendation: On a night you do not feel like making dinner go in at 6pm...order the Tuna Sliders and have a couple of beers...I can not think of a better way to spend $9 on the Space Coast...lol!