What's the reason being given for not being able to use the Plat override? They can only refuse if they have an exemption.
The Delta Barrington has an exec lounge which is open daily. Delta Halifax doesn't have a lounge but provides full brekkie in the restaurant. Marriott's lounge is closed on the weekends (cont'l brekkie in the restaurant w/ $3 upcharge to full).
Cheers.