Most appealing Diamond Amenity visually used to be a grilled veggies and cold cuts plate served with roasted garlic bread at the Regency OC.

Regency Penn's Landing used to serve a huge cheese platter with mostly solid quality French and Italian cheeses, nicely arranged with crackers, salted butter and Aqua Panna.

The properties in Germany also give out some sweets ( cake or cookies ) for loyal guests aside from wine and a fruit plate.

Regency CDG has the same Diamond Amenity since years now, as pointed out already, a bottle of red and jelly fruits from their patisserie.