Different marketing strategy depends from how the team thinks about possibility, though sometimes it's not favorable to the gambler. I mean not attractable to gambler, but there are still gamblers who will take it as additional perks.
It might be different from how they offer last time and maybe they will assess it and see if how they will
work on it to bring gambler's attentions.
The promotional strategies always change and team come up with new ideas and also considering lot of factors like the amount they want to distribute is limited or have certain wagering requirements to gain profits back also or many others but if we are interested in it we should take part otherwise there are many promotions going on.
Promotional strategies will be different because these are constantly changing that is also you mentioned. A promotion may last for a specified period of time or may end earlier. A gambler should proceed as directed. Here the team can have different types of calculations. There may be modifications to consider with new promotions. These issues are the responsibility of those who work with promotion. But it is true that if gamblers participate in those promotions they can get good rewards. In this case every gambler should have participation.