The key will be on the participation and I am a little worried it might be a long list or plenty of major cities almost excluded. If however that fear is not realised then it seems a reasonable promo!
It seems they are trying to promote multiple night stays and reward that which seems reasonable. Obviously some business travellers might be less happy and certainly hotel hopping makes less sense but as the hotel hopping is almost playing the system a bit then you can understand why they wouldn't reward that.
It will all come down to that list on the 23rd!