Just a thought, will the spay/neuter clinic take a blood sample for your cats and have it analyzed then the results sent to your vet in Anchorage? Maybe even ask the spay/neuter vet to give your pets a quick exam, and ask the vet in Anchorage if they will do the pre-exam the morning of the dental (as long as the spay/neuter vet says everyrthing is OK)