As a WDW regular who visited DLR for the first time in May, here's my $.02, for what it's worth...
WDW feels more like a vacation which I think in large part that has to do with the warmer weather and the resorts.
We stayed at the DLH and I fully expected to love it and didn't. The best part about it was the headboard. Otherwise, it's kind of old and run down a bit with a VERY small hot tub that was overloaded with kids the one time we tried to go. If we go again, I would either stay off-site and save a bunch of money, or go the complete opposite and stay at the GCH because it seems to be more what we are used to when we stay at WDW.
When we were in DL in May, it was CHILLY...to the point of being uncomfortably cold the one night we stayed out for WOC. We never ended up staying for the DL fireworks because we couldn't bear the thought of another night of freezing like that. Even the days were chillier and kind of gloomy...could be our bad luck or bad pick of dates. Clearly, FL has more than its share of weather issues but our usual travel times are April and October and for the most part, we are blessed with warm weather. We like to get up early and rope drop then spend afternoons lounging by the pool at our resort before heading back for dinner and nighttime shows.
We missed EPCOT. I know they have a lot of the rides there in CA, but there's no World Showcase or festivals or GOTG Cosmic Rewind. I know the DLR QS is amazing but with all the festivals throughout the year at EP, it gives DLR a run for it's money. We also missed AK and all of the charm and let's face it, Flight of Passage
One last thing I'll say in favor of WDW is the security at DLR is terrible and is soooooo much better in WDW now that they have scanners. The whole manual bag check at DLR is ridiculous and needs to go.
I'm sure it sounds like we didn't like DLR which isn't true...I was just saying to DD that maybe we should go back next year! It's just different and has it's own appeal, just like WDW has its own appeal for different reasons.
Since you asked, I would say just try to enjoy and not compare while you're there! Here are some suggestions:
Spend more time at your resort (hopefully you're at a good one!). Sit and relax by the pool or the hot tub!
Walk around EPCOT although you seem to be there at one of the rare times there is no festival happening, but I hope you get to stay for some of the Festival of the Holidays because it's wonderful!
Try to get some last minute dining reservations at the unique restaurants in WDW...people change plans all the time so there's a pretty good chance to grab them!
Go walk around DHS and enjoy the most amazing retro Christmas decorations! And while you're there, go on "our" Tower of Terror because it's awesome!
Walk around Disney Springs which IMO is much better than DTD...try to get a Gideon's cookie or eat at The Polite Pig...amazing QS food! I also just saw on a blog that Jock Lindsey's has some really cute Christmas decorations up.
Do a monorail resort crawl and look at all the gorgeous Christmas decorations then take the boat over to Wilderness Lodge to see the best tree of all. Finish out with dinner/drinks at Geyser Point (which doesn't require reservations) and watch the Electric Boat Parade go by on Bay Lake.
Enjoy the rest of your trip!