Hi, there. I will be in Porto for 4 nights with a work trip at the end of September. Hopefully, there will be time for sightseeing during the work trip. Would two more nights suffice for day trips? I'm not really a wine drinker, but was considering one day for canyoning in Geres Park and another day for kayaking there or elsewhere, as long as they are going in September. Is another day trip more recommended than a second day trip in Geres Park? I really prefer nature to city sights. Thanks!
If your business trips are like mine were, there will be little time for sightseeing. Some evenings might also have work related functions. Based on my visit last September, one-two days would be sufficient to see the main sights depending on what you want to visit. Without being wine drinkers, you could probably get by with one full day.