You’ll get the standard Dia benefits and nothing more. if the hotel isn’t busy (which seems unlikely in Aug), you may be able to snag an upgrade. Definitely ask at checkin- they’ve never pretty-upgraded me, but have done so upon asking. When busy, I’ve always been denied an upgrade (or even a change of room within the same category). You’ll get lounge access and can take breakfast in the restaurant. I though the latter was quite extensive, and would recommend eating there as the lounge can get very crowded.