MGM wouldn’t address your question publicly, so we put it to the Queen of Comps herself, Jean Scott. She writes, "I’m not sure of MGM policies these days since we no longer play there – but I’m not surprised they don’t allow back-to-back reservations. Caesars says you must have 72 hours between offers. Sometimes a host can get around these rules – but you have to be a pretty big or long-time customer to be considered."
We don’t know how large your play is, but we hope that it’s big enough that MGM reconsiders its treatment of you.
Meanwhile, if you want to stay on top of the current lay of the land casino comp and promo-wise, we strongly encourage you to tune in regularly to Jean's Frugal Vegas blog, where she most recently posted about a subtle -- and potentially misleading -- change to Station Casinos' Total Rewards point calculation, and where every month you'll find an update to all the best casino promotions, or details of changes to ongoing offers and bonuses, plus handy insider tips (like where to park), which is really worth checking out.