If nothing else this topic proves without a doubt the diversity of physical/emotional differences from one person/couple to the next. Regardless of being in the swing/ENM/Kink lifestyle.
Everyone has their personal acceptances/expectations/limits and they are/will always very from one to another. For most these will change and very over time, length of time spent and experiences in their chosen lifestyle.
The only real hard and fast rule and it applies equally to each individual, consent, no means no and is universal, in and out of the lifestyle.
In defense of women (some men as well) in general not all are able to be direct, tend to be more submissive, are not confident or vocal for does, don’ts, stop etc. I have had many experiences with women play partners, mostly first time play where I ask about do and don’ts and not get much more than a shrug or murmured “I don’t know”.
I have experience and in many cases avoided situations where the husband/boyfriend seemed quite controlling for the most part of her do and don’ts then what he would follow himself……to “just show her a great time, what ever you want”.
Sex play by assumption is also not advised.
I think in the end you have to judge for yourself, individually where your acceptances and what you are not. If you are with someone, or committed relationship you have to have a discussion between you both of your personal acceptances and that which is not.
And do be aware that there will be situations where in the heat of the moment something happens….how this will be discussed and reconciled.
It’s adult activity……requires some reasonable level of adulting…..without threats.