We used to invite single men / couples around to play with my wife - just watch, or if happy full intercourse. But the wife went through some problems unrelated and we had to stop - that was 10 years+ ago now, and she has put on some weight and lost has confidence. 
We would like to 'play' again, just a matter of my wife regaining her confidence being a larger size. We will post some photos in due course, she still likes to wear stockings, she just struggles to feel comfortable in larger size lingerie (size 20/22).
She's got great boobs, and loves to play with herself - fingers not toys, rubbing her clit till she spurts.
When she's masturbating she loves being told that she's being watched and then taken both in the ass and pussy....once she's rubbed her clit to orgasm (which doesn't take long) she's desperate for a fuck and will take any cock - past experience - our first time when we did this - we agreed the bloke who visited could only watch. She played to orgasm on her clit and surprised me when she begged for this bloke to fuck her. This excites me, I love to watch her getting it on with another bloke, taking photos or video of her being a slut.
When you've cum in her (protected) i then fuck her in front of you - though i don't last long, and spunk inside her - she's then ready for you again if you can manage it, if not you leave and we go at it again. This is what we like, she gets off being watched by a stranger, and then is desperate for him to fuck her, and then i take 2nd's. 
She's also bi, and we've done this with couples where she's always keep to go down on another woman, parting her lips and flicking her tongue - with the bloke fucking her from behind. 
We have tried the DP thing, she's done this before she met me and loved it - but when I've tried with another bloke it doesn't seem to work - perhaps 2 x blokes visiting would be up for this and i can watch again.
Either way this is what we like, just have some confidence issues at the moment, but if you like size 20/22 mature woman that loves a fuck (but she doesn't give oral - only receives) but is in to full french kissing though, we maybe the couple for you. 
As i say, we're just testing the water at getting back in to some fun - Goes without saying the wife has read and agreed to this be published.