overcunningly | permissions and kinks;

Short version:

Kinsey 6, she's incredibly gay (she flirts with everyone, for political reasons, but her own interests are very queer).
Kinky sometimes, in a fluffy way, and a switch with sub tendencies.
As shipping goes: yes to Sansa, yes to Daenerys, yes to Brienne, yes to Arianne, yes to every Sand Snake, yes to Asha, yes to all the Essosi girls, yes to Ros, yes to... hells, any appropriately-aged girl she's not related to that isn't out to get her.

Regarding kinks:

Yes: vaginal sex, oral sex (giving and receiving), bondage/light BDSM, sensory deprivation, teasing, honor bondage, tribbing, biting, dress-up, toys, spanking
Maybe: stricter BDSM, public sex, role reversal, punishment/discipline
No: dub/non-con, anal sex whipping, bathroom anything, vore, sounding, humiliation, bloodplay, ageplay, caning, orgasm denial

Ask if something isn't listed.

Regarding partners and relationships:

Margaery is a 6 on the Kinsey scale. Margaery likes girls. Margaery knows how to flirt with men and seduce men for politics, but her private interests are in women.
While she will use sex as a weapon with men, I'm not interested in playing that out; she doesn't do that to the same degree with women. There may still be a power dynamic, but she doesn't just go around sleeping with women to mess with them or manipulate them.
She'll seduce women in any context that it's safe and where she knows they'll be discreet. That and her social position lead to more short flings than actual relationships, but she'd be interested in the right circumstances.
Margaery is a switch, but she dommes when it's necessary (i.e. when the other party is less experienced and needs guidance) and defaults to subbing, sometimes topping-from-the-bottom, otherwise. She's the princessiest of subs, she adores being pampered..

Regarding shipping:

Instant yes (in canon): Sansa, Arianne, Brienne.
Negotiable (in canon): Daenerys, Asha, Ros, every Sand Snake, every Essosi girl, any appropriately-aged girl who's not her enemy or relative.
"Types" (particularly for cross-canon): some women like pretty girls.

Ask if you're not sure. Margaery is a flirt and also sexually adventurous. She likes a challenge but doesn't require it.

To clarify, Margaery stays around season three by default (it's easier for memes), but I've read through A Dance With Dragons.