We are in Boppard right now & wanted to give a heads-up to any travelers in Germany over the next 10 days. This weekend (Sept 26-29) and next (Oct 4-6) will be a big wine festival here in Boppard, with live bands, tasting booths & other festivities. They are busy constructing booths right now. There will be fireworks on both Saturday nights which you will be able to watch from the long promenade along the river or from a riverboat (even better).
Last weekend we saw what we think was the Rhein in Flames fireworks display & it was spectacular. It started with a huge parade of lighted riverboats (at least 2 dozen) & we wished we were on a boat instead of standing in drizzling rain! We actually watched them from St. Goar. We were on our way to Oberweisel & everyone on the train (including lots of young partiers in costumes & funny hats) started piling off the train in St. Goar. We asked someone why & they said fireworks were better here. So we got off too. We saw about 30 minutes of spectacular fireworks. Can't imagine anything topping this so I suspect it was the Rhein in Flames.
Anyway, at these wine festivals be sure to taste the "new wine" -- unfiltered, sweet & almost carbonated. Reminded us of Fresca! Interesting.
One more tip: if you're in this area & want to visit Marksburg Castle without a car, be aware that you have to reserve the shuttle from Braubach to the castle in advance. We (and others) had read that the shuttle meets the ferry. Not true (at least yesterday). We hustled up that steep path to get there for the 1 pm English tour! It's been drizzly all week but luckily the rain held off til after the tour & we had walked back down the hill.