I have organised a trip to Porto for my friend's 50th birthday, as he lkes beaches and port; however, hainvg planned a day on the neach with wne and sardines and another day on a river trip up the Douro I now see that the forecast for this weekend is AWFUL. We arrive on sunday am - which is apparently a holiday and everywhere may be closed, and leave on Wednesday. HELP! does anyone know what is good to do in the rain? We like colourful markets, good food and wine - any ideas, please, gratefully received. Thanks.