Ordered a $100 gift card but was only credited $50. Canned customer support answer that this was a policy change (link sent) but this is not a transparent and obvious notice (not provided on the rewards page). There is no separate acceptance of this policy that benefits OpenTable by shorting (loyal) customers of promised benefits. I had to ask for a company 800 number since the computer form answering service has no ability to make decisions on customer reimbursement for charges.