The following year we did a free character lunch at Ariels at DCA. It was free with our package. It was a huge tri tip dinner. The bill would have been $100 but Costco payed for that. The food and atmosphere was excellent, we will do this again.
I looked into that and it is a good deal if you also get the 4th night free deal. However, I found that I could book the same offsite hotel by other means for substantially less using Entertainment book or Hotwire. But for some hotels and days the Costco deal is certainly a good option.
