quick synopsis - Cruise never launched (basically due to attempting to advertise and acquire passenger deposits prior to an issuing of Certificate by the Federal Maritime Commission), the chips, along with other casino items, were sold at auction and dispersed from there.
Some of the higher denoms were found on
eBay by a member here. I acquired the $100s, $500s and some of the $25s from them.
I went digging and put together the lower denoms ($.50, $1, $5) from several sources around the US (non PCF members).