score:5
It seems to be possible to enter without a train ticket for these members.
On their lounge page, Amtrak lists who can access them. They list those specifically needing a ticket:
- Amtrak passengers with a same-day ticket (departing) or ticket receipt (arriving) in First Class or sleeping car accommodations.
- Complimentary ClubAcela Single-Day Pass holders. Same-day travel ticket not needed.
However, regarding the Amtrak members, the ticket is not needed:
- Amtrak Guest Rewards members with a valid Select Plus or Select Executive member card.
So it looks like the agent at the counter would not ask to see a ticket to let a member of Amtrak Select Plus or Select Executive enter there. You need to have the card, though - I don't know if Amtrak systematically sends a card to all its members.