Day 1 update... we had an amazing day! We started out in DL 15 minutes before rope drop. Waits were practically non existant for the first 3 hours.... not even for bag check or turnstiles! Some highlights : riding alone in a log at Splash and having our own "ship" for Smugglers Run (after a 15 minute wait

). From 8 to noon we had covered all headliners including Rise of the Resistance and all mountains. Longest wait was SM with 20 minutes.
We went back to the hotel for a few hours to get out of the sun and give our feet a rest.
5 to 10 was spend at DCA were we rode Webslinger

, Tower, Luigi's, TSM, Soarin and some attractions at the Pier with almost no wait.
As veteran WDW visitors, we love how compact the parks are. Not needing to take any transportation is great. Being able to comfortably eat outside is lovely! Honestly not having to worry about the timing of FPs or ADRs is amazing!
Over 35K steps were logged on Day 1. We might have to slow down the pace as we have 3 more days of tickets!
As for jet lag, I was up super early (5am) and needed that after noon nap.