The Snow Raccoon's "Spa" is an area in refrize snowfield, when you enter it, you gain an amount of xp every 5 or so seconds depending on your level. The XP isn't terrible, but you can gain much faster grinding/questing. However, you don't have to be at the computer to get the XP from the spa.
You use the ticket, it sends you there, you run into the water and AFK for an hour.
Hope this helped.