One of the things the newly sober don't quite grasp is how much change is required to successfully recover from alcoholism. Change in what we do, where we go, who we engage with socially. Drastic change. There are many aspect of your old life you are going to have to let go off...not just the alcohol. And some of the things you will have to let go off, at least in the early weeks and months of sobriety, is, "weddings (bachelorette parties), graduations, birthdays, the list goes on."
I would also advise not to do too much worrying about summer drinking in April, four days sober. Just worry about not drinking today.
Good luck.