The spa and cinema offers may be okay, but the hotel and flight vouchers are offers "around every corner". By that I mean: I get a superficial "added value" by a factor of 7.5 (flight) or 5 (hotel), simply pay more for the product and it can only be redeemed from a minimum amount...
Or, to exaggerate somewhat, the following scheme is applied: for a CHF 20 CUMULUS there is a CHF 150 pizza voucher, redeemable in a pizzeria where a pizza costs CHF 50. In addition, it is only valid for a minimum consumption of CHF 1000, i.e. I have to take a whole club with me and eat overpriced pizzas....