general rule of thumb is to pump when you would feed. and a weekend isnt very long, it should be fine. 3 months is pretty well established, but certainly not rock solid, it never really is, things can change faster than you think, though you can also build your supply back up easier than you might think, so dont worry too much. but, i do want to mention that you should take into consideration how effective your pumping is. if you dont get a lot of milk quickly at almost every pumping session (you will probably get less at night), it may be that you just dont pump as well as you nurse. some people just dont get a lot when they pump, and do just fine when they nurse. if you think you fall into this category, or if you arent getting as much because you are drinking or whatever, i would definitely add another pumping session or 2 during the day. as for pumping and dumping after drinking, i always thought the rule was about 2 hours after your last drink, the alcohol was out of your breastmilk, whether or not you pump and dump. it leaves your breastmilk the same as it leaves your blood after a certain amount of time. you dont have to get rid of your blood to get rid of the alcohol, know what i mean? it dissipates or absorbs or whatever it does. however, someone here said 8 hours, maybe im wrong about the time, or maybe it depends how much you drink? anyway, i hope you really enjoy your weekend away!!