I was there last week March 11-18. I was the 'planner' for my wife's family, 16 in total, 8 children (4-11) and 8 adults (38-65) we go about once every 5-6 years, so was important to make the most of it.
Working on my Trip Report here:
https://www.disboards.com/threads/wdw-march-11-18-2017-16-people-one-house.3583222/
It was bananas, but totally doable. We rope dropped most days, then left around 1:00-2:00pm and returned for 7:00pm. Got it all done, I could make a short list of what we didn't do.
-Rental cars: had to wait 1 hour to get to the staff at the Budget rent a car desk.
Avis was completely out of cars.
- Traffic was always stop and go on the 192 and almost always backed up along the stretch of Buena Vista Drive where they are working on the Epcot Centre Dr. Overpass. Getting in and out of Disney Springs was always hard.
- Morning RD traffic was light, and the one day we went to MK later (9:45am) it was backed up down World Drive giving a 15 min wait to the parking gates, and then another 10 min to the parking spot.
- Rope drop crowds were robust but manageable.
- RD at HS we were there when they opened the park but still had to wait 35 mins in a lineup for Jedi Training, and our first available spot was 2:10pm. I mean we were waiting with guests for the tapstiles to open and still this is what we were left with.
- RD at MK was in the park for 7:35 with a 8:00 am opening and headed directly over to the 7D side and got into the group as deep as we could, got on the ride at 8:27am.
- Bag Checks were fine at RD and in the evening, not an issue. One day we went at 12 noon after a Park Fare Brunch, the bag check was also fine, MAYBE a 5 min wait.
-Strollers were always plentiful.
- congestions in the parks was bonkers, the walkway between Fantasyland and Liberty Square: always the worst. But only encountered one rude guest, and it was leaving AK at 9:45pm. North American, tired, grumbled because we stopped with our group to wait for a missing couple.
- Waits were insane, but that's why you have a plan. We rode all headliners except FEA (were offsite so couldn't get a FP and used our Epcot RD on Soarin with our FP for Test Track). Rode Splash 3 times, Rode Thunder 2 times. Road Buzz 3 times, road Soarin 2 x, road Safari 2x, Kali 3x (not really brag worthy: was so cold), Star Tours 2x.
- It was COLD: that actually beat me up worse than the crowds. We were unhappy. Left Canadian late winter to enjoy warmth. Could have happened any time, sad that it happened to us. Water parks closed, pool only useable by the kids.
FPs and rope drops helped.
Let me show you, in 5 park days we DIDN'T ride or see the following:
AK: Rafikis Planet Watch, Gorilla Falls, Boneyard (we even did the little carnival games in Dinoland)
EP: Turtle Talk, Ellens, Circle of Life, O Canada and France Movie and El Rio and FEA
HS: Disney Jr., Fantasmic, Great Movie Ride, Muppets, Little Mermaid show, Star Wars Show.
MK: Monsters Inc, Stitch, Carousel, Astro Orbiter, Enchanted Tales, Riverboat
I think I would be disingenuous if I suggested we didn't have a very fruitful touring experience, and the cold weather made the parks very tolerable during the day.