Are there trains to somewhere close to Neuschwanstein Castle?
Or buses that go directly?
I was there last week and I did a tour which left from the Munich main train station (München Hbf) at 9.15am. Had to meet the tour guide at 9.00am opposite platform 13/14 in front of the exit/shops (easy to spot just look for the person holding up a Neuschwanstein tour sign) and pay for the tour then and there, around 39€ including castle entry. The tour looked after the train fares, buses and told us the interesting history about the castle and Ludwig. Got back around 19:00 (7pm). There are trains that go near to the castle and then you catch a bus from there, so you can organise it yourself. Not sure of the towns you need to go to but the information office at the train station would be able to help you. A point to note is that when you buy the castle tickets (in the village below) you will not get to do the castle tour (which is what the ticket includes, you dont get to walk around yourself) immediately, there can be up to a 6 hour wait. Doing an organised tour can avoid this because they pre-book the tickets. Maybe this is something you can organise yourself as well. Not sure about direct buses. Hope this helps. almost 7 years ago
You have probably already been...but you from Munich Central Station (Muenchen Hauptbahnhof) you can catch a train to Fuessen, then you walk about 3 minutes to a bus stop and catch a bus to Hohenschwangau. Fromt here its a short walk to the castle.
I think it ends up being around 50Euro return..if I am reading the site correctly (I did this trip in 2007).
I have done it this way myself and had no hassles. The transit time was fairly long, so you need to leave very early if you are doing it as a day trip.
I went in winter so there was no waiting time at the castle itself, and it was magnificent in the snow!! almost 7 years ago