While Mike is correct... c'mon. How would they ever know? This is a gray area that no algorithm in the world will ever identify.

In the state of Washington it is against the law for bars to give out free drinks no matter what. I was in a band for 10 years and we played at dozens of bars/venues big and small in the area. Guess what? Each and every one of them gave us free drink tickets. This is a law that is punishable by jail time. Much more serious implications than what Google is threatening you with.

What's my point? I don't know. Bending the rules can work sometimes I s'pose.

If I were writing these letters I would be polite, cordial, concise, and honest. Simple as that. Mention how it will be beneficial for both parties for a reason beyond a free night. Maybe don't offer a free night but a free dinner and breakfast instead.. More of a promo-package exclusively for reviewers if you're worried about Google's Guidelines.

--my thoughts

• Not bad

• Benefit only comes from a usability preference. Do you think your readers would rather see it without the html suffix? Some people think so.. I personally don't think it matters at all but a lot of people will say "shorter is better." It also maximizes your compatibility should you ever change your format from an html to an active server page or something of the sort. (i think that's pretty rare though.)

• No you will not lose PA. 301s maintain link juice (for the most part.)