In that case u can try to book online & entrance tickets separately. Hoping to go Tokyo but plan on hold due to radiation, hb say play safe with kids. So another 2 yrs bah.
When my girl was 2yo, I survived using sarong sling bcos hkg terrain diff to use stroller. U can rent stroller at Disneyland. She also needed to take nap so missed many rides & shows. This trip we covered all thise we miss & new toy story.
The difficult part will be transfer from hotel to hotel with luggage & kids. Ask the conceige to book a taxi for u & pray for smooth traffic. Taking mtr around shopping area during off peak should be managable. Can buy an octopus card if u take mtr everyday.