IMO I think Universal Studios/Islands of Adventure are the better choice. With all the different rides at Universal... MIB, The Mummy, Jimmy Nuetron, and Shrek and Islands of Adventure with the Hulk, Dueling Dragons, Spiderman and others you and your family can't go wrong. Not to mention, you can walk around both Parks and CityWalk drinking ice cold Bud Lights...
City Walk has a really cool night life geared for adults (kids welcome) plus Emeril's Resturant
We have only stayed at the Portofino, we enjoyed it. Look on the internet to see if there is any inernet specials for Park tickets or hotel specials.Universalstudios.com
Good Luck..Enjoy your vacation where ever you end up going and
we'll see you at the Bills/Bucs game....Go Bills!!!