The 1-Day Passport admits you to one park only, and the Park Hopper does not open until 11:00 a.m. Seven themed lands against eight themed ports decide the rest.
JTB sells Ghibli Museum tickets from the 1st, three months ahead; Lawson at 10:00 Japan time on the 10th. Tickets are name-registered and ID may be checked.
Shibuya PARCO gathers Nintendo, Pokémon and several anime brands on one floor. When that is worth a dedicated stop, and when Akihabara serves you better.
Sanrio Puroland rewards adults who want time inside the Sanrio world rather than rides. Whether it justifies the trip out of central Tokyo, and how long to allow.
Gundam Base Tokyo earns the trip to Odaiba for exclusive Gunpla and the large-scale displays. For general Gunpla stock, Akihabara is the shorter journey.