I have:

Marriott
Room(s)
1 Bedroom Suite, 1 King, Sofabed

RI
2 rooms —
1 Bedroom Suite, 1 Queen, Sofabed

RI
Room(s)
Studio, King, Sofabed

Marriott
Room(s)
Guest room, 1 Queen or 2 Twin/Single Bed(s)

None of these have anything under Guaranteed. Not even a line for that. Only a "not guaranteed" line.

But according to your reference, I should get the bed guarantee on the ones I booked that say specifically, correct? I seem to have left several hundred dollars on the table in the last few months...dang.

The page you link doesn't say how to get the $$...IIRC you have to alert management before you check out, right?