Accept not except (and don't get me started on jibe and jive).
#1.-- It will show $100.
#2.-- Yes the seller can see all the maximum bids. Since bidding stops when each bidder reaches her maximum.
So, if you bid $90 and I bid $89 and the Reserve was $100, the high bid of $90 would be published during the auction. The bidding is also viewable and the seller (or you or I) could see my maximum $89 bid.
Are you planning to sell with a Reserve? Don't.
Many bidders find Reserves annoying and will back button away from the auction.
Remember that your opening price is a Reserve, in that no one can bid less than that.
Further, you pay a fee for the Reserve whether the auction is successful or not. So you are paying more to fail.
Open at a price that you would be comfortable with, and hope the price goes to a point that makes you ecstatic.