We are spending five nights in Vegas in September and with two adults and two kids, all of these little attractions add up. Are there some good combo/discount tickets for the attractions (considering Venetian gondolas, Madame Tussaud's, New York roller coaster, High Roller ferris wheel, S&R's Secret Garden and Dolphin Habitat, Eiffel Tower viewing deck, etc.)? Any of these particularly recommended? We could probably spend five days just walking the strip and visiting the free attractions and looking at the hotels and spending time at our resort pool and not spend any money on those things. Is that the better option? We do plan to see some night time shows, also, and I am thinking of just showing up at the Tix4Tonight booth and getting whatever we can get (we haven't seen any of the shows, and there are many I think we would enjoy). Thanks!