A couple months before shooting began on Iron Man 2, J. Michael Riva, the movies set designer, had his first crack at the script. As there were several plot points for him to work on, the first plot point outlined "Tony, in the Iron Man armor, pukes in a toilet."
This confirms what a lot of fans were calling for originally when they heard confirmation of the sure success that will be Iron Man 2. Tony will be fighting the urge to consistently drink, turning him into an alcoholic. This goes hand in hand with what happened to Tony Stark in the comics. I'm glad that the producers are staying true to the source material and I hope they can come up with a positive outcome for the millions of fans that already look up to Mr. Tony Stark.