not drinking for a day or two because you don't have enough to BUY booze is not SOBER.........waking up the next DAY after drinking is not SOBER. do not feel like you need to reward him in some way for any of this.....SOBRIETY is an series of actions, not an event.
chances are he'll find a way to have booze........but if he does have any serious medical reactions, do not hesitate to call the ambulance. drinkers usually have to be fairly advanced in their drinking careers to have serious w/d complications....but one should never rule out the possibility.