Don't drink to much, but celebrate the milestones...i tried not to celebrate to much, for the thought that i hadn't really accomplished anything till the sim is over. Finally started the sim this week after nearly a month of sitting.

If they give you limitations and memory items before hand, study up. If not, start studying as soon as you get them in your SOP's, these will most definatley be on your oral, and will come in very hand during your sim. besides that, take in as much as you can, and study as often as possible as a group, you'll learn more bouncing things off one another than you will solo.

PS-
What company are you flying with?