We have resort hopped some trips and not on others. As you can see by me signature, our trip in Sept. 2004 was very "Hoppy". We stayed in 4 resorts (some of our party left WDW area for a few days and as it was me and my DD (5) alone, we economized by staying at PC for a few days). 4 resorts was at least 1 too many.
On our next trip we didn't hop at all. 8 days at PC. We decided hopping at least 2 resorts is better. We got a little bored with PC.
That being said, on our upcoming trip in Sept. we are staying at POFQ for 6 nights. Splitting the trip between 2 resorts would have made the "free" dining more expensive as we would have had to buy 2 one day base tix each.
Sometimes we resort hop so we can splurge on a few days and then economize the remainder. We've never found it to be a problem. Checking in, etc.
56 days and counting!