That's great to hear (or read!).
Question about stacking LLs...so we are staying onsite, so 7am can book one. Then, when the park opens at 9am I can book another even if we haven't used our 7am one yet? Then Again at 11am, 1pm, etc (every two hours)?
Almost correct.
We grabbed one at 7am (at our home airport) and since our park reservation was for DHS, which opened at 9am, we were able to book our next one at 11am (2 hours after park opening). We grabbed another at 1pm. So when we arrived at the park around 2:30pm, we had 5 LLs (we'd also purchased 2 ILL$). I grabbed another at 3pm as we were queuing up for our first LL. Essentially we had 6 LLs at 3pm for the rest of the afternoon/evening.