Sightseeing Savings Challenge: how low can u go

[Amorphous02]

Hello Super savers and Thrift yodas,
This thread is supposed to teach us your strategies for saving the most when going on a trip. Not any trip. You have to pick a trip on Amtrak that takes you through scenic routes,while serving gourmet entrees. The best i could do after learning to stack deals from Flash was to use my reward points and use my 5% cash back CHASE card : DURING WINTER. Yes, Amtrak is subsidized during winter. I have 30 days to cancel the trip.
Can you come up with a better strategy? booking online has 5-10% off incentives. Booking 60 days or 90 days ahead: another 5%.
It can be from and to anywhere. How low can one go?
Please guide me Jeffrey...
The reason for my not including air/water travel: they have been discussed to death.
This seems to be new.
Humble traveller