Disney World saw "lower results" on attendance and revenue, while SeaWorld reported a nearly 3% attendance drop across its parks.
SeaWorld expanded its Howl-O-Scream events this year to Orlando and San Diego.
Legoland Florida will scale back distancing markers to three feet starting May 14.
On the plus side, per capita revenue, admissions, and in-park spending increased in 2020.
Also delayed will be Emperor, Pantheon and Ice Breaker.
SeaWorld San Antonio will reopen on June 19 with face masks and advance reservations required.
You can make reservations on the SeaWorld Orlando and Busch Gardens Tampa Bay websites beginning at 10 a.m. eastern time on June 8.