"We are really gearing up for the opening," he said.
Remedial work, he said, was progressing well and with fine weather he hoped for a summer opening.
If it opens when predicted the park will have been closed for more than a year since Bolton Equities bought the business in early 2014.
The Ministry of Primary Industries (MPI) first ordered the park closed to the public between July 1 and July 31, 2014, while the animal enclosures were upgraded to meet new standards.
MPI then extended the closure until August 31 but the upgrading has still not been completed.
Mr Weekes said most of the upgrades had been finished, except six new enclosures. There was slight delay in the construction of the new areas as the park management and the new keepers were taking another look at their designs.
The new enclosures are not requirements set by the MPI but are needed by the park for more space.
Once all the remedial work was completed and the park was ready to welcome visitors, the owners would be required to apply to MPI to resume public tours.
The ministry usually does inspections on the park - which has 34 big cats - every four to six weeks.