Okay so here is another view:
It really is very inconvient to move resorts in the middle of a vacation perioid. Yes its great to see and stay at different ones, but from a family who just did this..... I would not do a split again for along time and then it would have to be a really good reason.
Here are some things that are not so great about moving:
Repacking
Checking out by 11am
Not getting new room till 4pm!
Lost time because of transfer and checking in
If no car must get a taxi (yuck) hire town car to pickup if u must.
Getting layout of new resort
Unpacking
IMO - stay deluxe your dd will be so happy and will not ever want to stay at ASMO again.
While some of this is true - you do lose some time packing/re-unpacking - some of it does not match our experience. We've done several split stays with no towncar or rental car. You pack up your room, call for your luggage to be picked up - and head to a park. The polite thing to do is to tip baggage services, but otherwise it's rather simple and free. Later in the day, you show up at your new resort! (My most recent split was last November, It was non DIsney witha car, but we slept in three different hotels over four days)
When we do split stays at Disney withoout a car, we didn't bother going to our new resort until after 3pm, so our room was ready. The times where we've had a car, and gone to our new resort in the morning, our room was ready. So it's kind of a toss up, but sometimes your room is available before 3pm.
Another time I managed the transfer very easily via bus. I was transferring from ASMo to the Contemporary - and wanted to go directly there to meet family. I simply hopped on the MK bus - with my luggage, and walked from the bus stop. I was kind of amazed at how quick and simple the whole thing was. (I also could have had some of the bags deliverd via the bag service).
When doing split stays, it does help to be organized,and to pack accordingly. We put our dirty laudry directly into a suitcase (Or a large plastic bag that fits quickly in a suitcase) Those large shopping bags Disney gives out make great laundry bags. I suppose it also helps to streamline your packing a tad.
If you do the online check-in, then checking in really doesn't take much time, and it is the job of one person. Everyone else can be in the cafeteria, exploring the gift shop, exploring the resort lobby, etc.
I've pretty much been to every Disney resort already, so learning the layout is no big deal for us. I suppose it's cup half empty/half full thing. If we find a new part of a resort we've never seen before, I don't think of it as a negative - I think of it as a new discovery. I wish Disney would hurry up and open a new resort or park for us to 'discover.'
Further, I'd argue, that if you plan your trip correctly - being at a two resorts can add to the convenience of your trip. We dine at the resort we're where we're staying - or at places which are close. I can easily cover the loss of time of the transfer with that simple step.
I've decided that splits are actually the way to go for us.
He dreams of staying at the Poly. He remembers having Dole Whip and being able to pick up a baby duck when we visited last April, playing on the beach in the dark and watching fireworks. So magical! He finally gave up his "herbie the love bug" hotel obsession and traded up. LOL
. If it were me I would choose the one I really want to stay at and then go on you tube and find video's of the resort and pool. I would make a big deal about all that resort has to offer that the other one doesn't. My son is easly persueded so I think I could change his mind. If he didn't then I would have to suck it up because I try to stick by my word. It's a respect thing and it can come back and bite you in the butt if you don't. I also would look into the split stay and everyone wins! Good luck with your decision. Once you are there your not going to care much about which hotel your at, you will be too excited about being at Disney and celebrating with your favorite people 
Problem solved! You get to stay some place you REALLY want to, and she gets to make the final decision. 
