Now 13.90 excluding sweets and drinks

I do not think there are different costs for that occasion

Yes, you enter without problems, as it is generally crowded, I suggest you book and specify in a junction that they can give you a comfortable table

€ 21.90 excluding drinks and desserts

13.90 plus € 2 of cover

if I remember correctly lunch at 13.50 ... at 20 euros for dinner

Yes in the a la carte menu there are numerous courses of cooked dishes.

I sometimes go to lunch and accept them, I'm not sure in the evening.

It is the same for every day at lunch, if I'm not wrong it should be € 12.90 each, drinks and desserts excluded.

And