Can I just nominate Pikelet's word glurpo for new word of the week, please? I love it!!
I don't think that DanDruff is being unreasonable to assume that a plain cheese and tomato pizza would just be pizza base, tomato sauce and cheese on top - that's what I'd assume too. But I suspect that another early poster is right, and the donor was trying to make the nicest cheese and tomato pizza possible.
Regarding catering for people's food likes and dislikes. Well - if I'm having people round for dinner, I will try to find out if there's anything they don't eat, and will work round that. If the dses friends are coming round, and I know in advance, then I'll do my best to do something kid-friendly, unless I know they'll eat something more exciting. If someone, adult or child, stays for a meal unexpectedly, then they do have to take pot luck, though I'd do what I could to cater for them.
I do remember going to stay with a friend of my mum, when dsis and I were young teens. We went and stayed with this family 3 or 4 summers on the trot, and before the first visit, the host mum asked my mum if there was anything we wouldn't eat, and was told that we both really hated liver. So during the first visit, she gave us sandwiches with liver pate in them - and being polite (and brought up to eat up what was put in front of us) we ate them - so host mum decided that my mum didn't know what she was talking about. The final summer we stayed, this culminated in her serving liver casserole - which was totally nauseating to dsis and me - far, far worse than the liver pate which she'd given us several times previously. Dsis (who is younger than me) ate some and left most, but I managed to eat it all, by dint of holding my breath and gulping it down. I must have done a good job, because host mum offered me seconds!!!! I refused politely.
I wouldn't put a child through that.