According to Notice of Race, you would only need to pay a fee for measurement if you don't have a certificate and the Chief Measurer wants to charge a fee...Get measured before you go.

It looks like the only measurement to take place is weighing and checking the certificates, which doesn't appear to require a measurement fee...and shouldn't require a fee.

One week seems pretty short for an 11 race regatta, especially when long distance travel is considered.