Alcohol on planes

I couldn't find the specific regulation, but as far as I know If it's a private filght there should be no problem with having alcohol aboard. Private aviation security regulation are different in private aviation and on major airlines.

The cause for prohibiting alcohol on board commercial flights is that liquid explosives might be disguised as alcohol. The chance of such a terror act on a private aircraft is way lower. 

yes

FAA rules forbid any pilot from consuming ANY amount of alcohol in-flight!  Your passengers may open a bottle, but as the pilot, you must stay awake, sane, and sober. If you must pass control to a passenger, he must be sober also.  I hate to say how many mid-airs that African air carriers suffer because of drunken or stoned pilots.  Catch a downdraft or wind shear, and your reaction (and judgment) will be way off.  Calm-air turbulence (CAT) has claws! 

Airport security rules apply to private aircraft when they use that airport.  Regs at LAX are somehow a little stiffer than when you land at Love Field in Dallas.  DFW gets all the airlines, but Love still handles nonscheduled flights. 

When you file your flight plan, know the regs where you plan to land and know alternate landing strips along your route: many do not have flight control. 

Always observe the "eight hours from bottle to throttle" rule.  It will save your license -- and your life.

Per Benediti:

The chance of such a terror act on a private aircraft is way lower. 

I remember a stretch when I could not take to the air in my humble little Beechcraft: 9-11-2001 through 10-01-2001.  Then, private planes could resume flight but FAA regs about flight plans somehow got just a little bit stiffer.  I can't figure out why.  Maybe it was because something weird happened in NYC and DC.

Don't sell short the terrorist potential of a privately-owned aircraft.  One could do all sorts of nastiness with an ultralight if he were so disposed.  FAA has taken what I consider appropriate safeguards (pardon me if I defer to go into specifics) but nothing can render the skies safe if a lunatic wants to abuse the beauty of flight.

It is purely a disciplinary matter.  That is why we have prisons: very secure places where even the rottenest cuss cannot get his grubby mitts on anything that is potentially dangerous.