I would be asking. At the daycare my kids went to they worked with a paediatric dietician to meet the daily requirements for kids of each age group while they were at daycare. They used to have cake for birthdays, but with so many kids and so many birthdays they decided it was too much, and so they stopped doing it. It was great. My kids favourite lunch at daycare was lentil soup, actually
My kids have eaten fairy bread, sure. At the end of the day though...if we've got 3 birthday parties on the weekend, then that's their sugar intake for the week. Add in fairy bread or sweet treats given out at daycare/school, then it becomes hard to have a balanced diet. I actually hate it when I go to pick my kids up from school, and might plan to take them out for an ice-cream for afternoon tea, and it's been some 'special whatever bs crap' day, and they've been loaded up with crap at school. It sucks, because then I can't take them out for ice-cream because they've already had too much at school. I work on an 80/20 rule when it comes to food, and as far as I'm concerned schools/daycares/pre-schools etc. shouldn't be providing non nutritional rubbish to kids, because they have no idea how many parties kids might be going to, or what the plans are...and for those kids who don't get fed healthily at home ever, well, wouldn't it be nice if they could be given healthy, nutritional food at school.
As I say to my kids 'when we know better, we do better,' so the whole 'back in my day' thing doesn't cut it because we're a much more obese and unhealthy country than we were 30+ years ago.