My wife and I will be in Trier next month and we plan on using the Kolb service to Bernkastel-Kues. I can get most info from their web-site but is this service very popular and would advance booking be advisable?
We will be able to use the Thursday or the Saturday service. I planned to book on the day but my wife, (who is very keen to take the trip), would never forgive me if both days were fully-booked.
Thanks in advance.