Hi Michel. Theres lots to do in Goa as you can see from the response here. However, remember that the North coast is the busiest (especially on weekends) and cheaper, the south is more expensive but quieter and somewhat nicer (sand, more traditional, etc). Aslo don't miss out on Goan culture, temples, churches, food, etc Have a great time,
Been going to Goa for decades. Top tip - The North coast (Bardez) is essentially over-developed and commercialised. The South coast (Salcete) is a little nicer and up-market.Other regions further north and south are very nice - but it is a matter of time before they are overdeveloped. Suggest that you 1) avoid weekends at Calangute and Anjuna. 2) Visit a) the Friday market at Mapusa, b) Old Goa (go there early). c) The spice gardens. d) The temples of Ponda e) The garnd houses of Chandor.
Cheapest meal in Vancouver is Sushi - from 5CAN to 30CAN. Depending on what you want and how much you want to spend.
Ask people wher festivals are taking place. There is one nearly every day, They are colourful and interesting.