Originally Posted by
msb0b
If your plan for the day doesn't take you near Park Hyatt, maybe you can put the bag in a coin locker and pick it up in the evening on the way to the hotel.
I would prefer not to do this since I have a lunch reservation at Kozue inside the Park Hyatt at noon. However, I do appreciate the suggestion. I think my plan is to just go ahead and get to Daimon by 7:30 at the latest and just hope for the best on the Oedo Line. If it already seems insane when at Hamamatsucho/Daimon, then I'll go ahead and use a coin locker and just come back after lunch for my bag.
Thanks for all the input, people.