Wife's birthday is just 4 days prior, so we usually have a combined family dinner out for steaks or something somewhere.
My b-day also falls on/during our typical Spring Break, so I get a week off work with pay to celebrate
Should my b-day be the Friday before or Monday after, I put in a leave form.
Actual day-of depends on the weather and mood, but I usually take the day to myself and go fishing or shooting or both or ....