Sea World isn't a big ride park and doesn't offer a FP system,it has Kraken the big rollercoaster, Journey to Atlantis,a log flume type ride and Wild Arctic, a simulator.It also has a few kiddie rides in the Shamu's Happy Harbor section.With so few rides a FP system would be pointless.In my opinion Journey to Atlantis and Wild Arctic sometimes have lines over 30 minutes and Kraken's line is usually under 20 minutes even in busy season.Sea World is mostly about the shows and draws a more family crowd than other parks which is why Kraken's line is usually not bad as compared to going to Islands of Adventure where you'll see Hulk with lines over an hour ocasionally,even though Kraken in my opinion is a superior ride.The way to do the park is to grab a park map and see the show times and plan your day out when you'll see each show leaving space open for the rides and other walk through attractions and eating.Unless you go in a very busy season the lines for the rides are usually not too bad at all.