You can bet the train will change directions anyway esp after it stops
at a major station.
We are talking about an EC from Munich to Venice. The only direct train, EC87, does not change directions in any major station between Munich and Venice, so whatever direction they are facing to begin with is the way they will face the entire trip.
Five of the six of us need to face forward.
I think you are confusing want to with need to. But anyway, the train starts in Munich so it will be brought empty to the track well before departure time. Get on early and find seats you like before everyone else gets there. There will probably be a lot of unreserved seats (as indicated by lights above the seats). Other than that, if you reserve seats you probably have a 50-50 chance of riding backwards. But that's really not so bad.
I don't know where WagonWEB gets there information, but I don't think EC1289 exists, or has existed for many years. I've been looking up rail schedule for over 15 years and as far back as I can remember, the trains from Munich to Verona have always been EC81-EC89. I checked with German, Austrian, and Italian Rail and with RailEurope, and nowhere could I find anything else but EC81-EC89. The EC that leaves Munich at 7:34, which coincides with WagonWEB's EC1289, is EC81, and it doesn't go to Venice, it goes to Bologna. You have to change in Verona for a train to Venice.
EC87, which leaves Munich at 11:34, goes direct to Venice Santa Lucia. It's the only EC that goes to Venice.
EC89, which leaves Munich at 13:34, only goes as far as Verona.
The 1st class fare from Munich to Venice is only available from German Rail for the direct EC, 87. The full fare is 157,50 €, but you can get a 1st class, advance purchase Savings Fare ticket from the Bahn for as low as 59,10 € and, that includes a seat reservation. German Rall allows you to specify more than 5 people and get a special group rate.
You said you got a fare of 186 (what currency?) from RS. RS doesn't show specific fares. He does have a map of approximate fare for 2nd class ($100) and says 1st class should be about 50%. That would make his approximation of the fare $150. The only place I found a $186 fare was from RailEurope (not RS), which is notorious for adding a big profit in their prices.
interesting to note that it implies (OBB) that the cars are owned by
Austria
I suspect those are Austrian Rail cars from Salzburg or Vienna added in Innsbruck. I watched one of the ECs going to Italy go through Muenchen Ost a few years ago. It had a mix of Italian Rail cars and German Rail cars but no Austrian Rail cars.
It's a rather long train trip. Can you spare a whole day from your
vacation for this jump?
By the time you take the S-Bahn from the Hbf, from where the EC leaves, to the MUC S-Bahn station and walk to your check in counter, you probably will spend an hour, and you should really get there 1½ hours before flight time to go through security and boarding time. The flight takes about an hour, so you'll have 3½ hours invested by the time you get to VCE. And you can't get off the airplane immediately, it takes time to deplane and find ground transportation, then it's 20 minutes into Venice. So I'm guessing you'll spend 4-4½ hours flying vs 6½ hours for the direct train. Neither way will take a whole day, but both take a significant portion of your day.
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