I think the young and beautiful Kelly failed to mention a major perk of passing, perhaps thinking it self evident. If you pass, there is no need for feeling scared or nervous. No worries about someone reacting badly to you, no worries about going to the bathroom, no worries about laughter or snide remarks. Kelly mentions all of the things you can have and get from being passable - what I mention are all of the things that you avoid if you were passable.
My ability to pass is entirely hit or miss - I have on some occasions, but on most I don't. This has given my rare glimpses at the life or perks that Kelly mentions. I have had doors opened for me, I have had men offer to help with my bags, and these are nice and affirming things. But more than that, when I do appear to be passing, I like the peace of mind it brings - the lack of worry.
So, having admitted that most of the time I don't pass, I can confirm part of what you mention in your OP. Being accepted is acceptable to me. I know I'm a male, they know I'm a male, and still they treat me with respect and courtesy. I'd rather pass, but I'll take this as second prize and do find my out and about time to be more than worth this.