MO, like Four Seasons, don't have a loyalty program. However when you make a reservation with MO you have the option of creating a folio to enable you to fill your details in quickly when making future reservations with MO. This folio enables MO to track its clients and to determine the value that they are worth to the organisation. Regular guests who are tracked through this system can expect upgrades, although as with regular loyalty programs (eg Hilton Honours) these can not be guaranteed.

However if you are planning to stay for an extended period of time I would contact the Front Office Managers directly. The real benefit that MO have is that they are very focussed on guest needs, and there is the ability to develop relationships with management in the hotel (if you stay there regularly). So I would contact the Front Office Manager directly prior to your stay and negotiate any perks directly with them, and from there to develop a relationship with them. You will find that you enjoy the hotels more too once you become known to them and I am sure they will treat you well.