I agree that the lake is staying busier this year than in the past 10 years in my opinion. As an example, at APM, the overflow parking lot has been used consistently since Memorial Day weekend and is still in use today. In the past few years, it has only been needed over the big Holiday weekends for the most part.
Visitors to the City of Page / Lake Powell from foreign countries also seems to be back to early 2000's levels. This in anecdotal not a fact based opinion - just going by what I am seeing. When shopping in Page yesterday I believe I heard more people speaking languages other than English than were speaking English. All very nice I should add.