Paying?

Given that it is a kindergarten show, i guess it is not going to be very long or very late. Maybe the meal is an optional extra?
You need to ask your son for clarification, then decide.

Karen your English is very good.
It is not ‘Danish’ in any way .

If it was just a screen shot your son sent it could be just to let you know about times etc but I would just ask him. Some schools here charge money just to see the show with never a meal or even a cup of tea or coffee.
It is lovely to see the children so would be a shame if you didn’t go.

And dont’ apologise for your English. It is far, far better than my Danish ❤️

I would ask if he and his wife are intending to stay for the food, and if they are I would pay and stay too. It would have been better if he had let you know about the food when he invited you, but possibly he didn’t know then either.

Is there an option to go to see the play but not stay for the meal or does the ticket include both things. Is it a full meal or just snacks/buffet type food. I would say you will just go to see the play and won't be staying for the meal if that is acceptable to you either eat before you go or afterwards at home. To be honest I don't think it is a lot of money if it is a full meal, but everybody circumstances are different. I appreciate you have a lot of grandchildren.

Oh dear, that is difficult. I have a son and I would just ask him, to please clarify the matter. I’m sure he won’t mind .

Agree with all of the above.

I would contact your son and say that one of you will be delighted to go but it is a bit too much for both of you. Hopefully that will jog his conscience that £24 is a lot to find for some people.

I wonder if he does expect you to pay or maybe he was just letting you know that food would be available? The only way to find out is to ask him. If he does then I would just pay and go, assuming that you can afford to. If not then explain that you would love to go but cannot afford it. It's difficult, but I imagine that if you fall out over this then you may not get invited in the future. It would be a pity to miss out.

Ask your son if he is paying or if you are paying. If you can't afford it, tell him. I wouldn't expect my children to pay for me at grandchildren events. If they did, it would be nice.