I play mostly during weekends due to a full schedule during the week, since my job at times require for me to put in extra hours.
During the weekends, my prime game time spot is actually Saturday morning and afternoon, since I tend to spend my evenings in the company of friends and family.
When I pay my subscription for the privilege of playing online I expect to actually be able to do so, especially when I choose to play during a timeframe that is normaly considered as prime (or very close to prime) game time. I expect for the service I pay for to be available, just like I expect my other subscription based services, like cable, to be available when I choose to utilize them during a perfectly acceptable time of day/week.