Great idea. We would love to join you but being Easter we are away (not in Spain!) on the 22nd and I am sure other people will be, how about making it Thursday 20th (most people break up that day) or Friday 21st?
Also just a suggestion, but is Birmingham not more central for people? I am sure we can find a Spanish resturant there, I can check this out if you want. Just some suggestions, we would really like to make it or maybe another date in Manchester, just can't do the 22nd.