I know your question has already been answered but I am going to go ahead and give you a more detailed post.
Yes, you may use amazon affiliate ads and Google adsense ads on the same page. You should never ask users to click any ads whatsoever. Also Google Adsense has nothing within their terms of service about 'not' using amazon affiliate ads with google ads at the same time.
Yeah that should be fine. You should label both types of advertisements to make sure they don't get mixed up. AdSense and affiliate links shouldn't interfere with each other. Just don't try to advertise an affiliate link directly.
Conflicting views here. I had one frined that use to run hiw own travel site. Oneo fo the stipulations that he mentioned about adsense is that there couldn't be anyother ads from other companies on the same page. But it seems others here say that it is possible with amazon.