First off when i go there i would bring my bestfriend and my girlfriend there. 
Then i would visit every attraction with water and try  all the pools after that i will visit the beach and hang out there maybe jetski if we get the chance to. After that we are gonna grab something to eat. 
I would pick the twin room with my girlfriend and my friend will pick a single room. 
Then i would stay about 2 days to explore the local area in portugal maybe go on a trip to the city go to some clubs and party or something. i saw about a boat trip trut he valleys of portugal close tot he coast i would like to see and visit this with my girlfriend for example. Or even visit a whine cellar and visit a restaurant right after. 
Defintly also get some nice pictures on the waterpark and on the beach. 
 Maybe play some soccer at a local soccerfield or even some basketball if there’s a court. 
I would also visit one of their shows and try their local menu.