Hi Slowloris,
If it makes you feel any better, before I began this whole immigration JOURNEY I was quite a calm and collected person. Now I'm a nervous wreck dealing with immigration! LOL.
If it makes you feel any better, I actually only had my appointment number on my iPhone because I left my printout at home. The important thing is that you have A APPOINTMENT number. I don't think it matters much what it is on. They can look you up if need be. I don't remember if my name was on my appointment or not- but I don't think its a serious need to worry about.
After I showed my phone to the guard at the door, they gave me a sticky note and I wrote the appointment number on it, and that was put on the stack of papers that you bring from station to station.
Not sure if it makes you feel any better, but I couldn't sleep that night thinking I'd forget something, or we'd have a homophobic officer, or that the credit card machine would break, or that my biometric would go haywire. I was a MESS. Thankfully my partner was there to calm my nerves every step of the way. LOL!
All of this to say, my FLR experience was pretty good, LONG, and good. It can be many hours sitting in there bored, bring a book. If you have everything organized nicely (which we did) and just be honest and patient, you'll be fine.
We got a snazzy piece of paper, and my biometric ID card came later in the week (make sure you can be there to sign!). It is a HUGE hurdle and a big sigh of relief once we finished ours. I am so happy that this country has allowed us to be together.
I wish you the best of luck tomorrow and keep us/me updated!