I have found that grey's don't quite have the palette for single malt. So i wouldn't break out the good stuff. However, keep an eye on him and your significant other, grey's tend to become suave and charming when they drink. Probably the best thing you could do for him is relocate him deeper into the woods so he can prep for winter
Oh....almost forgot.....no bubbles, white's tree frogs are the ones who prefer the jacuzzi style.