Yes. You might want to look into the Universal 3-Park Unlimited ticket. It gets you admission to IOA, US, and Wet-n-Wild Orlando for fourteen consecutive days for about $26 more than the 4 day park-to-park for an adult (or about $19 more for kids).
I haven't gotten these before myself, but my understanding of them is that they expire 14 days after you've activated them by entering one of the parks, but you can use them however many times you want during those 14 days at as many of the 3 parks as you want per day.
So it is essentially a park-to-park-to-park 14 day ticket for barely more than a park-to-park 4 day ticket. It seems like a REALLY good deal to me if you plan to be in the parks for more than 4 days even if you're not interested in the water park.
And you might want to consider buying them from
www.undercovertourist.com. It can really save you some money. From everything I've read
UT is a very reliable source for tickets to both Universal and Disney. We plan to use them for our upcoming trip. Keep in mind while you are comparison shopping that the price quoted to you on the initial ticket purchasing page of Universal's website doesn't include tax & shipping, whereas the price on
Undercover Tourist's site already has that included. Plus if you sign up for the mousesavers montly newsletter at
www.mousesavers.com you can get a special discount link to
undercovertourist's ticket sales that will save you even a couple of dollars more.