I am so sorry planning your trip is stressing you out and making you sad. Although we've been to Disney over 2 dozen times, the new FP+ changes with
MDE and everything is stressing me out to the max, and making me want to throw in the towel and cancel, so I understand how you are feeling! I, too, have a DH who never feels the magic (although he's been to Disney maybe 6 times) who will be accompanying us on our next trip, so I get hubby-anxiety also. Here are my suggestions:
1. Cancel CRT. The food is mediocre and the cost exorbitant! Instead, plan dinner at 1900 Park Fare, at the Grand Floridian hotel (accessible from the Magic Kingdom via the monorail, so you don't have to go back to your car and drive around just to eat dinner). Dinner characters there are Cinderella and the Prince, Lady Tremaine, Drizella, and Anastasia (step mother and step sisters). It's a wonderful meal and I have heard the character interaction is wonderful, too.
2. To meet A&E, keep trying for the FP+. If it doesn't happen, drag your DD out of bed on MK day (she could even wear her shorts and tee shirt to bed the night before, and you can pack a snack and juice in your park bag) and be at the Magic Kingdom well before rope drop, then beat feet to the meet and greet site. You should be able to score a paper fastpass for later in the day. Do NOT make your DH accompany you on this early morning venture. Let him meet up with you a little later, somewhere in the park. You'll all be happier (but impress on him that he might not get to go to the M&G with you).
3. If DD really needs princesses, she can meet Belle at "Enchanted Tales with Belle" and Ariel in her Grotto in FantasyLand. Jasmine and Aladdin are in AdventureLand. There's always the Princess Hall (or whatever it's called) in FantasyLand. Don't panic- princesses ABOUND at WDW and yours will get to meet many of them! Go see the Lil Mermaid show and the Beauty & the Beast show in HS. ALSO
if she is too short for many of the attractions that one would normally FP+, use your FP+s for meet and greets.
Check out this link for "royalty" locations and suggestions:
http://www.charactercentral.net/CC7_DisneyCharacters_PrincesPrincesses.aspx
4. Handling Hubby. This is a bit more delicate. DH isn't a huge Disney lover, although he understands my fascination with it. While he is often happy to have DD and me go, he, himself, doesn't enjoy our repeat trips to WDW very much. He is a wonderful guy but being in large crowds with poorly behaved adults gets his goat. He gets irritated, and that rubs off on our pleasure. He is fairly orderly, a quasi-rule follower, and likes a relaxing schedule. SO
we go to WDW without DH much of the time. When he IS with us, I have found the following to be helpful. First, I don't make him stick to our itinerary. When DD was little I had an umbrella stroller for her and a backpack for me, so I could manage getting us on to the buses, etc., by myself We'd set out and he'd call when he got up. We'd arrange a meeting time/place, often being our lunch break (whether ADR or QS). I found that keeping DH well-rested was tantamount to our enjoyment of the parks- even more than making sure DD got her sleep! He always knew if he was "done" he was free to return to the room, and I made sure that I NEVER whined about it or made him feel guilty for doing so! DH takes WDW in smaller doses, at a much slower pace, than DD or I ever did.
4. MONEY. That's the name of the game at WDW! If we can't go to WDW for $1000 or less per person for a week, we don't go. Yes, it takes finagling. I open credit card accounts with Southwest for the rapid rewards (frequent flyer) points, so we can book "free" airfare. I regularly use my Disney VISA for all purchases possible for the points (1% of purchases become $1 in Disney reward dollars), paying off the balance each month, so I have "money" saved up- EARmarked

for Disney. I always look at whether an offsite or onsite hotel would be more affordable. I belong to a variety of "free" member sites so I can score discounts on rental cars, theme park tickets, etc. This is how we've been able to go to Disney every year (or two, slowed down once DD hit high school, also chose some vacations based on DH's preferences). PLEASE don't think that this may be your DD's one and only trip to WDW so you have to blow the budget and do EVERYTHING. Believe me, she will be FINE if she doesn't do BBB, for example. You can cut corners by doing quick service meals sometimes instead of doing all- or any- table service restaurants. Skip dessert at meals in favor of treats in the park. Keep your trip within your budget and I promise your DH will be happier.
OP, please keep in mind that you need to focus your energies and excitement on the things you are going to do, not the things you will miss. BREATHE, and remember you are going to The Most Magical Place On Earth! Take your budget in hand, keep your DH in mind, and plan the vacation that is going to work for YOUR family, not the ultimate vacation of a lifetime based on what you might read on posts here. Your 3 year old has NO expectations of what is going to happen. I assure you she will have an amazing trip to Disney World, as long as you are having an amazing time with her!