Wow! You are staying at the Crowne Plaza for just two bancotel coupons! What a bargain! Unheard of! Give yourself a pat on the back!
If you still have these by November, I will contact you. I plan to travel in December, if I get a decent fare. Thus far the fares are very high, but I hope that by August, November I will be able to pick up a reasonable fare.
By the Way, there is an older thread on this forum that tells of a travel agency in Madrid that sells coupons individually. Do a search of Bancotel and you may find the name of the agency.