Does anyone have detailed directions to Planting Fields arboretum?!

My videographer is asking me NOW for all this detailed info, like I have nothing else to do. He 'forgot' to send me this 'one month prep sheet'... so it's FOUR days ahead. argghhh... And he says he always gets lost going, so he needs detailed directions there.

The Planting Fields website just says 25A to Mill River Road and 'follow the signs'.

I'd tell him to go do his homework himself, but I don't want a lost video guy!

And he can't follow the limo because he's going to be shooting the limo pulling away!