Like many people, my weekends are a bit busier during the summer months.  Already, clients are booking through August, and I will be on the road an additional weekend in Maryland.  Often I do have a session left open a few days before a given Saturday, but I do suggest booking in advance if weekends are the best time for you to come in for a massage.  That said, some Saturdays are already booked solid, and for the duration of the season, the office will not be open on Sundays, so I can enjoy vacation season along with everyone else.