Bosses at Chessington World of Adventures said they reacted to the relaxing of lockdown with "sheer delight".
Chessington Zoo is already welcoming back visitors and the theme park will reopen on July 4 as lockdown rules are eased.
Around 1,000 furloughed staff have returned to make sure the reopening goes smoothly.
During the pandemic animals at Chessington had to be fed and cared for but no visitors meant no income.
The park is usually packed at this time of year which means work has been carried out to ensure social distancing.
People visiting the zoo at Chessington said they thought "it was about time things started opening up."
The number of guests will be limited and on rollercoasters and space will be left between riders who aren't from the same family.
For more information about Chessington World of Adventure reopening, click here.