According to Asahi News paper (website version), Japanese leading news paper, TDR may reopen from 4/6 w/ modified hours - due to strong demand from travel industries.
They will shorten the closing time to 6pm instead of normal 10pm, and limit the heating/cooling in the facilities. They are aiming to reduce the power usage by 30%. They hope hotels will reopen at the same time.
They are also considering a construction of a large scale gas generator in the park. The plan is to cover 70% of power TDR uses. OLC executive says if the goverment gives them special permits, they can build it in 6 months. They hope to have it by this Christmas season.
If you are insterested to read the original, it's here.