It's been said, butI'll say it again
Most everyone is right, Doug is just too fast, too inebriated from the ale to feel the pain and he drains your stock within minutes. Also, you might want to fix it so McSweeny is quicker to react when you click on Doug as opposed to having to DOUBLE-CLICK on him. Once you upgrade the stock to the full 8 barrels, it's damn near impossible to keep Doug from drinking all but 1 or 3.
Another thing you might want to fix, THE COST OF THE UPGRADES AFTER DAY 2! I got sick of the game after Day 1 as Doug kept making me lose money. I could barely keep 3 barrels full, because of his drunken ass! Maybe you could add in an AI helper to keep Doug in check while you're handling customers? Sure that's where the 2-player option comes in, but seriously, who's gonna play a 2-player flash game? Rarely anyone.
Please fix the Doug issues, and the cost of the upgrades. By the time I got sick of the game, I had like $184 or something, only enough to fill 3 barrels. I agree with everyone else, in that there SHOULD BE A CAP AS TO HOW MUCH DOUG CAN DRINK! Another thing, make McSweeny faster on his feet instead of having him shuffle. One more thing you might want to look at is, DON'T MAKE DOUG RUN IN WHILE YOU'RE SERVING DRINKS OR REFILLING!! It would be easier to keep him in check if he popped in while you're in the store room.
Please take these options into consideration. It's a nice game, but Doug kind of ruins the re-playability for the rest of us. 5/5, 6/10.