Don't have to pay to get in it's free, Train station at Kulmbach not far from the town square
have you a hotel booked? if not, you will find it near on impossible to get anywhere!!. Trains go from Frankfurt Airport ( I.C.E) have you booked? tickets need to be booked in advance, or maybe you could buy them at the Airport? long journey but a nice one. Having done it myself! but i did book in advance to avoid problems, booked my tickets from Euro Rail travel agents in Canterbury, called Canterbury Travel, but I'm sure you can secure tickets at Frankfurt, but they wont be cheap!!.
Better to book in the U.K, where there give you a seating plan etc. Your have one change a long the way,then its pretty much on to Kulmbach from there!
what Airport are you flying from and to? as this info might not be what your after!. Trains are good in Germany and run on time, most likely if your just going for the day your not need accommodation, opening times: Fri 9.00 to 16.00 Saturday same, Sunday closes mid day, if I'm wrong on times someone will put me right! hope that's of some help! come and say Hello when you get there!