Eating at a vegan restaurant abroad

Hello Rabbi, is it permissible to eat at a vegan restaurant abroad?
I thought of several problems: A. Vinegar made from wine, which is forbidden. B. Cooking by non-Jews. For this reason, only those foods that were made fit for eating by cooking or that are placed on the table of kings were forbidden (what about a food that meets only one of the criteria?) C. Eating from the dishes in the restaurant (would it be permissible to bring in separate dishes from outside and thus permit it?)
 
thanks.