Nine Fine Irishmen at NY NY has a pretty good bar and lively crowd. Like the name implies "Irish" or as much as you can expect in Las Vegas.
ESPN Zone at
New York New York Casino.
Wall to Wall TV's and probably the most sports nuts "a variety of sports" in Las Vegas.
Crown and Anchor Pub
The Crown is a English pub that attracts a college crowd and soccer fans for lively conversation and a taste of the British Isles.
Sports Deluxe at the
Hard Rock Hotel and Casino They have a great sports bar and sports book in one.
Steiner's
Steiner's is a traditional pub thats serves breakfast, lunch and dinner and offers an excellent beer selection, including over 24 draft and 70 bottle brews.
My advice start off at
NY NY Hotel and if that not your style head over to the Crown or Steiner's. If I recall your and your bro are staying at
MGM Grand so then its just 5 min walk across the elevated platform over Las Vegas Blvd.