Thank you for your responses, again.

So, the question... To those really busy folks, how often do you have a nice, long play session uncumbered by time?

It was only once a week or so for me, although we incorporated some BDSM elements into quickies during other days, and little spanks and such here and there. I truly wish it could have been more often though, as my D is long distance, so he was only here for 2 months.