The social program will take place on Wednesday, 1st May (a bank holiday). It consists of two independent tours of Porto. 1. Porto Historic Centre Walk (Cost: 5 Euro) 12:30—15h15 Lunch (participants are encouraged to walk around and make their own arrangements for lunch) 2. Boat trip: cruise of the bridges of the Douro river (Cost: 10 Euro) There will be two conference dinners: Tuesday and Friday. Check this link for details.