I worked out of the SGI campus before it got sold to Google, and I remember the on-site cafe there was amazing. I don't know how much Google changed about it, I've never been.
As a vendor, I (well, my company) had to pay for meals at SGI, I have no idea if the employees got free meals.
I used to hang out with Jeff Dean and he told me that Google and SGI both occupied the googleplex at the same time and the SGI employees looked sad because they had to pay for their meals.
I believe Charlie's (the main onsite cafe) has been renovated a few times although the basic layout was constant throughout my tenure (2007-2019) and in fact if you looked behind the curtains (literally), there was basically the equivalent of an archeological trash heap with generations of Google and SGI documents.
Over time Charlie's got worse and worse; the food quality dropped significantly and became quite monotonous (true for the other cafes as well), and Noname (eventually named Yoshka's) did too. In fact, every great cafe I remember attending was eventually replaced with a worse version of itself.
As a vendor, I (well, my company) had to pay for meals at SGI, I have no idea if the employees got free meals.