Hi there!
Just to share my experience with TnT. We went in last sat to print our invites, but we did not bring anything for reference. The girl who served us was very patient and gave us their samples for our reference. So after coming up with the draft, she told us to come up back 45 min later to see the proof. After viewing the proof, we thought it was fine and we proceeded to print. The girl then told us if in the event there should be any changes, we can call them to change. When I got home, I realised there was an error which I've overlooked. I quickly called the girl and told her the changes. She noted it and said it'd be changed. But being the paranoid me, I was worried for the whole week that the change would not be made. Then just this Sat, we went in and collected our invites, thank God, all has been rectified. We were really pleased with our invites.
I must agree we really need to check the proof thoroughly before printing .