Just did the Canal on Voyager over New Years and thoroughly enjoyed it. Was not bored at all; far from it. Get yourself a seat outside at La Verandah and just enjoy. It takes @ 2-2 1/2 hours to go thru the 3 Gatun locks. Then you usually have 3-4 hours at the Gatun Yacht Club on RSSC. The approach to the middle locks is very scenic. If you're coming from the Pacific side the Miraflores locks would replace the Gatun locks. Don't miss the entire transit of one or the other set!