Perhaps my testimony is less useful, as I've been married for over two decades, and only had one sexual partner my whole life, but at the same time, my experience is relevant.
The wife was originally a "one and done" gal, and at the time, so was I. We were married as teenagers and were both virgins, so we had lots to learn.
A decade into our marriage, I read "She Comes First" and it changed my approach to lovemaking; with our next encounter, she began having multiples and her "one and done" became dozens; now, we cannot count them.
Her newfound orgasmic potential meant that lovemaking went from 10-20 minutes to at least an hour and often twice that. To be able to last for her, I began witholding my climax until she was nearing the end of her journey; this meant I was essentially edging for an hour+ before I came. Two things happened:
1) She discovered that her strongest orgasms resulted from my ejaculation inside her, and that a bigger "load" meant more pleasure for her.
2) Her strong orgasms combined with my "edging" made my orgasm far stronger, leading to the occasional second orgasm, and recently sometimes a third.
Since then, we've had over a decade of practice and I have multiples nearly every week. We're intimate roughly 3x per week, so that is not terrible odds!
Back to the original question: Does she appreciate it when she gives me multiples? I would say that she feels a sense of pride that she played a role in it. I have had "full body" orgasms several times in the past few years as well, and she definitely feels "accomplished", as she knows that her foreplay and "bedroom skills" play a role. She also knows that I'm still attracted to her and that the attraction amplifies my pleasure. I could certainly climax while having sex with an ugly gal, but I wouldn't want to, and imagine it wouldn't be as satisfying.
She has told a couple friends about my "multiples" but more as a passing joke than anything. A friend of hers recently joked that her hubby went to sleep immediately after his climax and she laughed and said that I did too, but not until my second or third. This friend was astonished, but didn't inquire further.
horseman1978