Kouta fit club

So Tony Koutoufides (from Carlton Footy Club) has started these fitness sessions around Melbourne.
I went to one today.
I like that we were out on the oval.
But to make them free he plugs this nutrition shake.

Don't get me wrong I'm not moving from food to shakes. I came home to a nice recovery meal well within my calories and all fresh local produce.

Not sure if I'll keep going cos I love a freebie, but the advertising . They took photos and my image may be being used to promote shakes as a weight loss tool. Don't like that one either.

What do you all think?
They are putting themselves out as free and the drinks as optional so I think I have a right to go and not drink.
But chanting their mantra is not a good idea as it may get too deep into my skull and I may have to fight my brain.

TLDR
free boot camp with ads for a product I don't like, yes or no?