Is this restaurant open Christmas evening and do they take reservations
The only one who can answer this question is the restaurant owner. You will need to contact them directly.
Thy do take reservations (I emailed them) but not sure about Christmas evening, I would assume not.
Get quick answers from Al Vecio Canton staff and past visitors.
Guide to Venice for Families
Facciamo una passeggiata! (Let's go for a walk)