The Xtortionist
Member
Lots of visitors from the UK do this, book into a Universal hotel for one or two nights just to get the unlimited express passes and of course to experience the Universal hotels. If things go to plan myself and my family will do this in July/Aug next year.
Also I believe if you stay at the Cabana Bay hotel you don't get a free express pass.
Correct about Cabana Bay. Though you'll still get early entry to Potter.
Another pro tip is that staying one night at the other hotels will get you two days of express. It's good the whole day of check-in through the whole day of check-out. A good thing to keep in mind.