I will be interested to see how this goes when we check into Oberoi Udaivilas on Tuesday. We have been induced by the advertised "Stay for 10 nights or more and upgrade to a suite at any one hotel." promotion to book for a full 10 nights (out of a 10 night stay in India). We would otherwise likely be looking at a quite different itinerary quite possibly only staying 1 night at Oberoi hotels.

However the small print indicates that the suite upgrade is only if available on arrival, which gives me the impression that not only can the suite be sold at full price (as you would expect), but a guest arriving 10 minutes before us with one of these 'free upgrade' rates would nudge us out of the way.