London, United Kingdom
The Hard Rock Cafe-London was great. The "skip the line" was unnecessary when we went (5:30 pm), but by the time we left (7:30 pm), it would have been quite handy. The line was down the street.
The staff is really friendly and fun. The food is fine, but it's the atmosphere and memorabilia that you go for anyway. This is a really fun place to visit!
The staff in general isn't very knowledgable about these vouchers, but management knows what to do :)