Book early to avoid disappointment. This is especially important in times of high demand such as trade shows and major sporting events.
Avoid provisionally holding rooms directly with a hotel, as the hotel will not negotiate a better rate when Inntel take the booking over.
Many hotels now operate a "best market rate" system. This means that the rate offered reflects the availability of the hotel at the time of reservation. Therefore, the sooner you make a reservation, the lower the rate will be.
Some hotels may ask for a credit card imprint on check in. Do not be alarmed as this is only a security measure.