it’s nice to show gratitude, but I wouldn’t do it publically, beause if they can handle a few requests like this one, I doubt they would be open to everyone and his cousin asking. YYJ are not the only brand who does stuff like that. But personally I don’t post stuff such as this one because it may lead to more people asking therefore potential problems to the brand (either they say “yes” to everyone and start losing money, either they say “no” and start losing popularity)
my 2cents here
I’ve had similar gifts from other great brands, for charities, events etc… and they all got their gratitude emails and messages, but nothing in public.