Originally Posted by
mangoMan
Tried making an online reservation today and applying Costco vouchers. Website would accept the vouchers but the price in the "summary" section would not go down. I had trouble with this almost 2 years ago (see post #26 above) and they still have an issue.

Sent an email; hopefully their CS will help.
Their CS responded in less than 24 hours and set up my reservation and applied all the vouchers. Their CS is great, the website, not so much.
And as to whether taxes and fees are covered by the vouchers, the answer is: yes they are. I have a 12 day reservation paid entirely with 12 Costco vouchers.