The location on David Wilson's instagram photo of Kaori and Sonoko is Scotiabank Pond. Since Brian is currently relaxing in a pool in Nova Scotia, Jason working on choreography is a good bet. It was mentioned by Brian in the Icenetwork article that Jason could start on it now even with his injury.
"It would be nice if we could start that work right now[jumps], but there is so much we can do off the ice, and he can begin working with David on selecting music and putting together his long program," Orser said.