We go to WDW annually (DVC members with family and friends local to the Orlando area) and live local to DL - P-AP holders. I feel that I can offer an opinion, as well, as we've done all of the offerings - additional hard ticket and not.
I think you will be pleasantly surprised with Christmas at DLR! The only thing that
MVMCP offers that you can't find daily for free at DL is the free hot cocoa and cookies and maybe a castle forecourt show. Our $2.50 hot cocoa is much better here, too. We have the Reindeer Round-up Show, though, and the most amazing Mrs. Santa that just hangs out all day! Plus, the fact that you get the Candlelight Processional on one weekend - an Epcot event, makes it a bigger bonus. DTD has a really unique feel to it, too, with the large shade trees filled with colorful ornament lights and the music. I like the holiday atmosphere here at DTD better than WDW DTD.
I prefer the hard ticketing for Halloween at DCA, as it really restricts the random folks in costumes (no adult costumes per the web site) for personal safety of the guests. I feel it gives me a more controlled place to bring my kids. Halloween is a problem, by the nature of the holiday and you have to remember that DLR is very much of a local theme park, so it is much more probable that you will get some undesirable behaviors and risks. (Ask me about all of the blatant open flasks and alcohol smuggled in water bottles that I've seen in the packed crowds at DL on New Year's Eve, or the fight that started to break out behind us while waiting for the 4th of July fireworks this year, or how they have to do whole body frisks on Grad Nights.

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Tidbit about WDW - once they get into the actual holiday weeks, they discontinue MVMCP and incorporate all of that entertainment, including the parade, into the daily activities - making the hard ticket a bit more undesirable/resentful for the budget conscious that go earlier in the month....
Just my two bits.
Nancy