Watching Fights In Las Vegas - best deal on tickets?

I plan to be in town for the Nonito Donaire fight. I know it is not a big card, but I've never been to a fight in Vegas, and may go just for the hell of it.

At one time or the other, I heard something about buying tickets the day of the fight for a better deal than online in advance. Does anyone have any information on this? Are there ticket scalpers (sp?)? Should I buy the tickets in advance online?

In case I don't go to the fight, what is the best bar to watch a fight? Best sports book?

I appreciate any and all help.

Thanks.

I know should of bought my hopkins/calzaghe tickets on the day, they must of almost been giving them away. just remember many little booths around vegas selling them

Drago,

Do you recall if the tickets at those booths were less expensive? Do you recommend just waiting until the day of the fight to buy tickets?