Yes, you can still buy tickets on the day of your ...

Yes, you can still buy tickets on the day of your visit and will not sell out except for the fireworks cruise. It will only beconvenient to go directly to the line when purchasing tickets online. But line in the ticket booth is fast, the line going down the ramp towards the elevator that brings you down to the dock is long but moves quickly. A lot of people cut in line though.I suggest take the late afternoon or night with the illumination, low crowds and will have a chance to get to the front of the boat to take pictures. Funicular rides are extra and will cost $3/person if wanted