Before bed or in morning...unless her monthlys are visiting. Although 2 -3 nights a week I am not home...still try to sneak a session in somewhere during that time.
As often as she wants. When it does happen, it's typically just once that night as she gets very sensitive after clitoral simulation.
Like everyone else here, as often as I can - my Wife will remain very sensitive for up to a couple days after an intense orgasm, I have to be a bit persistent when she's still sensitive. Today I got home before she did which allowed me to clean up the kitchen and out up some laundry before she got home; once she got home I pleaded my case that sense I did XYZ that she should sit back tonight and allow me to worship her for a bit. Response was an immediate Yes but I'm not going to be unlocked Patiently sitting here waiting for time to pass and the kids off to bed... BTW, One of the best 'sex toys' I've bought is bed ready pillow as shown below - It's her 'Throne' for worshiping while laying back on the bed http://www.target.com/p/room-essent...gclid=COX01I38_s8CFZaCaQod_GcPLg&gclsrc=aw.ds
Every few days, and sometimes analingus on her too (you can't beat the scent of a sweaty female ass).
A few times most weekends and very occasionally once in the week if she is really in the mood. We start with a shower where she gets very assertive with me, then I give her back a massage before asking for permission to lick her bottom. Even if she has told me it is what she wants I am still expected to ask. She decides when she is ready to start building to an orgasm and will flip over onto her back. I then lick and suck her clit until she cums. I also use a finger with the come hither position to stimulate her g spot, and love the feeling of her vaginal walls gripping and pulsating around my finger.
Sorry to hear that. My wife allows me to perform oral on her occasionally. When she allows me to she loves it as do I.