Disneyland is much better for Genie plus as usually your return time falls within 2 hours of booking the ride, the time constraint to booking your next ride, so you're riding that ride, then making your next selection.
Disney World is rough because other than a few exceptions, most of the time, your return times will be greater than 2 hours. So because of that, people will try to get return times for mid to late afternoon for the first ride, then with each selection starting 2 hours after park opening.
Example at Hollywood Studios (no idea if this would be close to accurate so don't use as actual guide)
7am - book first ride 5pm return for Slinky Dog Dash
Also at 7, you can book your ILL$ for Rise of the Resistance - 630pm
8:30 - park opens
10:30 - eligible to book next LL - 6pm return for Millennium Falcon.
12:30 - eligible to book next LL - 4pm for Rocking rollercoaster
2:30 - eligible to book next LL - 4pm for Tower of Terror.
4pm - you have 2 rides booked. When you scan into Tower of Terror, (last ride booked), you can choose next LL, even if the 2 hour window hasn't expired. Scan into ToT at 4:05
4:06 - eligible to book next LL - Star Tours at 6pm.
So, now, with all your return times in the afternoon, they're stacked one after the other and you'll have a few hours of not waiting in line as you go from one LL to the next.
Unfortunately, your magic band doesn't do much for you as far as not having to use your phone. The magic band only scans you into the park and onto each
Lightning Lane. You still need your phone to book the next LL pass, etc. If you are booking each return time for 2+ hours out, , just set an alarm for your next pass selection time, which for pass 2, is always 2 hours after the park opens, then every 2 hours after. The part where you really need your phone is if the ride you want is sold out, but you want to keep trying anyway due to random drops either from Disney or another guest just cancelled, you may want to try refreshing for 10 to 15 minutes to see if that ride ever opens up. But again, all on your phone.
With
DAS, I'm not as familiar, but I believe for that, you go to the ride and get a return time that is usually as far into the future as if you had stayed in line. It just gives those who are unable to wait in line, the freedom to wait in line from somewhere else.
Good luck and enjoy your trip!