Yeah, it's funny how people who can do that don't understand the point of LL, but people like us (or maybe just me) who only visit once, maybe twice a year don't understand what it is like to be able to pop in for a few hours, or not have to get LL to maximize their day, or be able to say "I didn't get to ride this, so I'll just catch it when I visit in a couple weeks with my Inspire key."
I like to maximize my day, so I do stack LLs. I don't like to do the big rides (especially roller coasters) first thing in the morning. My strategy is to try to do all the non-LL attractions in the morning while their lines are low while booking up LLs for the bigger rides later, particularly if it is looking to be a busy day because I feel like standing in standby for 30-40 minutes for Snow White or Toads is taking time away when I can do them as a near walk-on in the morning. Why race to get on Space Mountain or any other LL attraction first thing in the morning when I'm pretty much guaranteed to be able to ride it later with a LL-sized line? I also like to often do Fantasyland first because it feels the most "Disneyland" to me and helps me to very quickly forget about the outside world.
It's not really a valid fear. If you book a LL for an attraction and it is down during your return time, they give you that Multiple Experience Pass that you can just redeem anytime for the rest of the day for that attraction or an equivalent one, and that pass doesn't negate you from being able to continue booking other LLs. The attraction would have to be down for the rest of the day to not be able to try again. On top of that, if you are in the LL queue after redeeming the LL and the ride goes down, they will scan your ticket and give you that MEP. This happened to me on MMRR on my last trip.
I used this strategy on my last trip which was a single day at DL park and did all of these attractions:
- Indiana Jones
- Pirates of the Caribbean
- Haunted Mansion (twice)
- Tiana's Bayou Adventure
- Rise of the Resistance (almost did it a second time in the evening, but it broke down)
- Millennium Falcon (single rider twice)
- Snow White's Enchanted Wish
- Mickey & Minnie's Runaway Railway
- Roger Rabbit
- Small World
- Matterhorn (single rider)
- Space Mountain
- Buzz Lightyear
- Big Thunder Mountain
- Adventureland Treehouse
- Tiki Room
- Walt Disney - Magical Life
Plus I still had time to play some Batuu Bounty Hunters and watch the Fire of the Rising Moons show. I also could have watched Paint the Night and the Fireworks show, but simply opted not to.
Oh....almost forgot, and doesn't apply for groups, but as I often take solo trips, utilizing single rider also helps get in more rides because I don't need to book LL for them.