I think the 'ticket' you get on the ship has to be exchanged for a wristband at the kiosk anyway. That being said, I pre-ordered mine for the Crown Princess next March. Here's some video. There's much more on youtube. YouTube - Roatan, Honduras cruise port and chair lift
Celebrity Constellation (Penthouse booked for 2014)
Princess Grand Princess (2012) Vista Suite
Princess Crown Princess (2011) mini-suite
Princess Emerald Princess (2010) min-suite
Carnival Conquest (2008)
Princess Grand Princess (2003)
Carnival Victory (2002)
Celebrity Century (1997) Century Suite
Carnival Fantasy (1997)
Carnival Ecstasy (1994) Grand Suite
NCL Sunward (1992) Marquee Suite
RCI Nordic Empress (1990)
RCI Song of America (1988)
We were there last Feb. and rode the chair lift to the beach. I can't remember the cost, not a lot though. There's a kiosk where you can purchase the tickets --or you can walk to the beach on a nice, new paved walkway. The best I remember riding or walking it's at best only a few hundred yards.
The chair lift was fun in itself to ride. There wasn't any lines--in fact we just walked up, bought our ticket and went right on.
I wouldn't worry about buying the tickets in advance, as lots of people just walk over to the beach.
When you get off the ship, you will have to walk a couple hundred yards slightly up hill to get to the shopping area they built--look to your right when you approach the shopping area and you will see where the chair lift starts. The kiosk is right there.