I am trying to book a train from Amsterdam to London on July 31. I am new to the Eurail pass but am extremely confused/frustrated with how many trains require seat reservations but then do not provide you the option to do so on the Eurail website. Below is a screenshot of the error message I get when I try to book the train from Amsterdam to London:
I genuinely have no idea what to do. Do I risk waiting until I get to Amsterdam on July 28th to book it at a train station there and hope that there are seats left? Any guidance at all would be VERY much appreciated.