Hi, I am traveling a little bit this weekend in Japan and will stay at a hotel with NEMA 1-15 2-prong outlet. This type of outlet is by far the most common here. I guess Tesla doesn't offer NEMA 1-15 adapter for UMC. Will these alternatives work? 1) use UMC, NEMA 5-15 adapter and 3-prong-to-2-prong adapter (so ground pin open and not connected). 2) use Toyota prius PHV adapter, 3-prong-to-2-prong adapter and J1772 adapter. Prius adapter is known to work on priuses without ground connection. I have (2), but if (1) might work better, I plan to purchase UMC and NEMA 5-15 adapter from Tesla. Yes I know charging at 1.2kW is a pain but better than nothing! There are many CHAdeMO chargers here but I have to wait in front of the charger because it stops after 30 minutes. Mostly designed for Leaf.