Explore program- French @ YorkU Glendon campus this summer

My child was accepted to the Explore French program(13-15 yr) this summer @ YorkU. I got mixed reviews about YorkU and would like to hear from someone who did explore the program there. Is anyone accepted to YorkU for this summer (13-15 yr program) & going there? I couldn't see the deadline for accepting or refusing the offer in my email or account. How long do they usually give us to decide? Thank you in advance!