I recommend starting with this thread. We do a comparison of rides at both parks and discuss other differences.
Also read the pinned Genie+ DLR thread cause there are differences. The biggest ones:
- You can’t book your first LL (or ILL) until you are tapped into a park (this includes the taps at the monorail station), NOT 7am like at WDW (regardless of on-site / offsite status).
- ILLs dispense sequentially like LLs at WDW, so you can’t pick a later time. You have to wait till the next available time advances to your preferred window. Thankfully most ILL attractions have near-immediate availability.
- Hopping time is 11am. You can book a LL in the other park and it will automatically select the first available time after 11am even if the window hasn’t naturally advanced that far yet. In WDW they changed this so you have to wait till return times advance beyond hopping time (2pm on the east coast, for those reading this who aren’t familiar)
- The primary on-site advantage is 30 minutes early entry at each park every day. This benefit is not offered to good neighbor hotels or special tickets as has been the case in the past. There are also dedicated entrances for GCH and PPH.
Most of the other rules are the same. Strategies are quite different because 1) there are fewer LL attractions in DL than in MK, and 2) since both parks are quite close, it is generally beneficial to hop and use Genie+ at both parks to churn through as many attractions as you can in one day.
Also note that standby waits are usually pretty short in the morning till 11am as locals start to trickle in. Evenings are generally busiest, in contrast to WDW.
Feel free to ask additional questions and I’ll do my best to answer!