buying tour on line or waiting???

Spoke with my travel agent today and mentioned that we were considering booking our tours online. She suggested that there would be better deals to be had if we waited till we got there. She also suggested that we may not want to schedule our time before we get there and settle in.

What are your thoughts. We will be leaving Mar 6 and staying at the Getaway club

When we went last year we waited until we were there. We wanted to go snorkeling and wanted a nice day so wanted to kinda see what the weather was doing. We also stayed at the Getaway and we booked our Vallarta Adventures trip at the desk next to the front desk.