VancityBride, The gazebo is really pretty but there are people around. Not that noticable though, due to the fabric that they hang off the end of the gazebo typically. For the wedding I photographed, although it was in the sand next to the gazebo, there were probably 5-10 people that had stopped to watch. Thankfully they were respectful and stayed back, so they were only in the photographs I took when I intentionally took pictures of them
The walking distance from the beach to the lobby is definitely a walk. It's not TERRIBLE, especially as the bride and groom, as I assume you'll be taking pictures. At least that's what we did. We took pictures during our walk to not only get awesome shots, but then you don't even notice how long of a walk it is. Without photos, I'd say a five minute walk if you're going casually.