I think if you want to go, then go. She will have a good time living, as babies do, in the moment, and YOU will have a great time watching her.
You'll be caring for her anyway...might as well take a week caring for her at Disney.
My guy was a few months over 1 year old on his first trip to
Disneyland, and he had a great time, and so did we. I wore him in my mei tai (traditional Chinese style baby carrier) most of the day, and it was terrific.
The next year we went again, I wore him on my back in my Ergo baby carrier, he was in the stroller for a few minutes, and he walked a bit. Again, it was great! He had a fabulous time. We had a really good time.
And at the end of the evening, as we walked to the trams to take us to the parking garage, I was wearing him on my front in the Ergo and he was facing me...he looked up in wonder at the twinkle lights in the trees...threw out his arms, and said/sighed..."Diz-neee-waaaaand..." Oh man did that make it ALL worth it!
From the time DS was less than 3 months, we were traveling. We stayed at a hotel after taking the train south for our first anniversary, and walked quite a bit around Portland, OR. We stay at local-ish hotels often, just for fun. Heck, for Thanksgiving two years ago we stayed at a new hotel up near Seattle, just to get away from the traditional stuff we usually put up with (we're vegetarian, so there's not much food for us at traditional dinners)! We're always traveling. Disneyland wasn't our first trip. Then again, on our first trip there he was teething HARD, had teething fevers 3 nights in a row, kept me up most of the night taking tepid baths with him (reduce the fever naturally since I knew it was only tooth related), nursing him, comforting him...and yet we had a great time on that trip (only a little bit of it was Disneyland, full disclosure).
AND we used cloth diapers, so we got to lug the used ones around the park, for washing later! If THAT can be done, ANYTHING can be done.
Regardless, you would be doing those parenting things anyway! Might as well go to a more-fun-than-your-home place for a week!
Good luck!!!!!!