I just completed a 1-day whirlwind trip last Monday (when attendance was expected to be a 9 out of 10). I had a 10 year old girl and my boyfriend with me. Neither had been to
Disneyland but both were at WDW last March, and our plan was to see stuff that was different or that we missed at WDW (Space Mountain, for example) as a priority and then do other stuff. Park hours were 8am-midnight, but we left after the second showing of Fantasmic as we were beat. Here was our day:
Arrived at parking prior to 8:00, stopped and bought our tickets, and were on Main Street by 8:05 or so. Grabbed a FastPass (FP) for Star Tours and headed to Nemo Subs. Waited about 3 minutes for the ride. After that ride, we walked on to Buzz Lightyear (posted 5 min wait) and then returned to Star Tours. I grabbed FP for Space Mountain and we shopped for pins/lanyard for 10 year old. After Space, we headed to Toon Town (which was gone from WDW last year). We did Roger Rabbit first, and then literally walked straight through Mickey's house to the screening room, where we had maybe a 5-7 minute wait, and then we had a similar wait next door at Minnie's House. I've never seen both Mickey and Minnie in under 30 mins before! After that, we decided to grab lunch, and Pinocchio's in Fantasyland was close to opening. 11:00 was a perfect time to grab lunch as it wasn't crowded at all. After lunch, we stopped at Pinocchio (5 minute wait) and Snow White (about 15 mins). After the castle walkthrough, we decided to save the rest of Fantasyland for later and headed to Haunted Mansion. HM had a posted 5 minute wait, and Pirates had a 15 minute wait. We also got Winnie the Pooh in Critter Country with a 5 minute wait. Splash was posted as 45 minutes at this time, but temp was in the 50s and none of us wanted to be wet. Big Thunder was at a 30 minute wait, and we could have grabbed FP, but it is not my personal favorite, so we skipped it. Indy had our longest wait at 35 minutes, and FP was available, but we opted to just wait it out since we didn't want to return to Adventureland in 2.5 hours with the FP. After Indy, we had about a 5-7 min wait at Jungle Cruise. The 10 year old really wanted to go on Peter Pan at this point, so we went back to Fantasyland via Snow White Grotto and did wait about 30 minutes to please her. I would have prefered to do this after fireworks and during the first Fantasmic, but didn't want the battle. The Tangled meet and greet only took about 20 minutes, and the Tea Cups had a short 5-10 minute wait. After Tea Cups, we staked out parade spots by the Matterhorn and had some popcorn. After the parade, we went to the Mexican restaurant near Frontierland for dinner and then did some shopping on Main Street. We grabbed last minute spots for the fireworks. After fireworks, we went back to Fantasyland for Storybook land boats and Dumbo before cutting through by Big Thunder to go around to Fantasmic seating. Seating was pretty full, but we were able to stand right at the rope behind the handicapped seating just right of the big light/sound rig. Handicapped seating wasn't full, and everyone else in front of us was seated, so we had a great view. We made our way to the exit after the show and were back to our car around 11:00. I know we missed some stuff (Tiki room, Mr. Lincoln) but I felt we accomplished a lot in our one day.
ETA: This was NOT a Magic Morning with early entry for resort guests. I know that can affect big-name rides.