outside tuning on July 4--hopefully without fireworks

[Mark Ultsch]

I'm going to be tuning a "D" on an upcoming outdoor orchestral concert
on July 4--my first outdoor one.  It'll be near a river at a park in
humid Wisconsin in late afternoon.  I predict a "bit" of noise, but I
hope not too many speedboats.

I am a reasonably slow (right Baoli??) aural tuner; but I'll be given
a fair amount of time to tune.

I've searched some archives (enough to feel that it is "mission
impossible") but still have questions about the best ways to proceed.

If I have a say in the matter, how far in advance should I ask the
piano be brought outside before tuning?
Should I tune it well in it's normal air-conditioned environment
first, get it outside and try to tune it or touch it up admist the
noise and leave it?  Can I have any clue as to how much the pitch will
raise?  How much of a pitch raise should I try to compensate for?

Anyway, your expert ideas on a good procedure and recommendations will
be greatly appreciated.

Thanks from a novice.

Mark Ultsch
Assoc., Madison Chapter