I've seen that happen, MrsC, then it runs out and they're demanding food. I'm agog at the expectation staff are there to make non-patients hot drinks or make non-patients feel 'welcome'.
But then, any HCP who's worked in maternity can spin your head with tales of 'partners' (and no, they're not all the fathers of the baby) who take the mother's bed and food, stink out and hog the patient bathroom, demand sex/have sex in the ward, take the chairs of other patients, intimidate and harass other patients, all sorts.