We'll be in Dubrovnik overnight in July on a cruise, and are deciding what to do in the evening. We will plan to walk the walls while in Dubrovnik, either on our own (in AM 2nd day) or with a tour in the evening, since I have found a couple of walk the walls tours that take place around 530pm). Another option on an excursion site is a kayaking trip in the evening, seeing the city/walls from the water, visiting a cave, etc. This would conflict with the walls tour, but we could do it if we walked the walls on our own the next day. FWIW, walking the walls on day 2 AM would be followed by a Game of Thrones tour @ 11 am.
I guess my question is whether the walls are better to walk in morning or evening, and whether a tour on the walls is better time spent (with our relatively limited time in Dubrovnik) than the kayaking trip, which sounds nice/fun, but maybe not a quintessential Dubrovnik activity? And also wondering if its "too much" to do walls followed by another walking tour on day 2. Just trying to make the most of our time there, any thoughts appreciated.