you should allocate some time to free-experimentation. When you discover that one activity was clearly better than another, you can change to the better one. Until then (and even after) having time to experiment (try new things) is valuable in itself.
the advantage of taking LW participants swing dancing (for example) is that you get to swing dance AND spend time with LW friends at once. (being more efficient than just doing one or the other)
you should allocate some time to free-experimentation. When you discover that one activity was clearly better than another, you can change to the better one. Until then (and even after) having time to experiment (try new things) is valuable in itself.
the advantage of taking LW participants swing dancing (for example) is that you get to swing dance AND spend time with LW friends at once. (being more efficient than just doing one or the other)