We make at least two overnight trips a year plus a longer stay every two years in mid-December. There are always new things to see and do. And if we can't catch everything in one trip, no big deal - we'll see it next time.
Some attractions never lose their appeal. Parades and fireworks – yes – must see every one at every park again and again. I’ve seen the movie at France pavilion how many times??!!
One of the best things about being a frequent guest is that we can take the time to stop and notice all of the details of "the show" - rides, entertainment, building details, landscaping, animals, birds, cast members we see from visit to visit.
We've done most of the backstage tours over the years as well.
Christmas time is wonderful. If it weren't for DH talking some sense into me, I could watch all three performances of Candlelight Processional and come back the next evening to see it again. DH also has to coax me away from the EPCOT fountain and the Lights of Winter Arch. I'm mesmerized by the music and motion...oh yes, hours and hours at the Osborne lights over the years.
BTW – DH and I are counting the 46 days until we arrive at WDW again.