I don't actually qualify as a regular since we only go 2 to 3 times a year (although the most
was 5 times a couple of years ago), but we usually go for 3 to 4 days each time.
But everyone is right, DL never really gets "old" for us (at least not yet). We definitely
(even my ten year old daughter) picks and chooses what to ride when and definitely
try to soak up the atmosphere and the details.
We just recently went to WDW and really missed that intimate knowledge and feel
of the place. Also esp. in MK, one whole level of detail is missing that's there (and we know) at DL.
Another thing is that I keep learning new things in books and *gasp* internet sites! :-)
that helps to keep things going for me as well. For example, I recently finished John
Hench's Imagineering book; it was fascinating to read about the origins of PM (which
the book talked about) and to hear (at the same time) about the rumors for PM2.