Hopefully this link to nps website is not automatically deleted:
http://www.nps.gov/yose/planyourvisit/bpcamp.htm
I guess technically you cannot. But I would not worry about it and
do it. That is what they are there for. Before 9/11 we used to
drive into Hetch Hetchy, camp, and then get up the next morning
to get wilderness permit. Done this too many times to remember.
I would say if you have a reservation you should be fine anyway.
Now I personally have never camped in TM BP Campground so I
could be sorely mistaken. We always just get up at 4am and barrel
up and start hiking the same day... (the wife isn't too happy about
that sometimes since she isn't as good at quickly acclimating to
the elevation).
So... again I would just do it and have confidence you are doing what
you feel is correct. I very highly doubt it that you will be bothered
by a ranger.
Anyone out there have experience otherwise...???
When you going? If I think of it when the permit station is not self-reg
I can ask your question specifically in person.