24/7 is definitely possible, the only question is for how long?
I am currently in my 47th day of 24/7 lockup. A new record for me. No releases from the cage at all during that time, and definitely no orgasms. No milkings either. I am allowed to service my wife only with my tongue or a strap-on. For a guy who is accustomed to having PIV sex with his wife several times a week, needless to say this is very frustrating. But the more frustrated I get the more my wife seems to enjoy it.
I am in a very secure device and wife holds the only key. So she is completely in control of when/if I get released.
Living the real life under lock and key