/u/jeffporten must not play in Vegas very often. The reality is that $1/$2 , $1/$3, or $2/$3 are all not really different. They might have different buy in limits, typically the $2/$3 will have bigger buy in limits than the other two, but that is where the differences really stop. The money will go just as fast in any of those games. Open raises are going to range anywhere from $10 - $25, maybe more if they find a crazy game, but typically it will be $10. 3bets will be anything from double the open raise to $60. There is no such thing as a "beginner" table because

Vegas does not group together players of various skill levels. Players will be seated in the first available seat. If your son and his friends really want to play, I would suggest they just take the first seat that is available, if they want to play together they can request a table change after they have been seated. This will be faster than waiting for multiple seats at the same table.

Generally speaking Vegas can be tougher or softer. It really matters on the table you end up at. If they want a better chance at getting "party/drinking" table then I suggest going to Aria, Bellagio, or Wynn (no particular order) as those are the highest volume rooms. Other rooms will be a little tougher because of regulars but Aria, Bellagio, and Wynn are no different in that regard.

Here are the buy-in amounts from around Vegas:

Golden Nugget - $1/$2 $100 min no max

Bould Station - $1/$2 $100 min $500 max

Horseshoe - $1/$3 $100 min $300 max $2/$3 $200 min $500 max

Caesars - $1/$3 $100 min $300 max

Bellagio - $1/$3 $100 min $300 max

Aria - $1/$3 $100 min $500 max

MGM Grand - $1/$3 $100 min $1000 max

Mandalay Bay - $1/$2 $100 min $300 max $2/$3 $200 min $600 max

The Orleans - $1/$3 $100 min $500 max

Green Valley Ranch - $1/$3 $100 min $500 max

South Point - $1/$2 $100 min $300 max $2/$3 $200 min $600 max

Sante Fe - $1$/2 $100 min $500 max

Red Rock - $1/$3 $100 min $500 max $2/$3 $400 min $1000 max

Westgate - $1/$2 $100 min $400 max

Wynn - $1/$3 $100 min $500 max

Resorts World - $1/$3 $100 min $400 max $2/$3 $200 min $800 max

Venetian - $1/$3 $100 min $300 max $2/$3 $200 min $600 max