Hi Czar and welcome, As far as walk-ins I have always received the paperwork and did exactly that, Walked in. As far as I know Quest don't accept appointments. I'm out in about 30 minutes.

I didn't know that about the batch number. Mine says batch F4L-07. As far as I know 4.0 is the current batch and has not changed. You may not have a choice but to use it and I would ask them will they open the box and check the number and if no 5 You will pay for it. Nice job doing Your homework.

My microwave is pretty powerful and 10 seconds sent the temp strip off the scale and I worried about it but it was fine. The directions say up to 10 seconds. There is a video on you tube tube that says take the top off while heating and that was news to Me. I use a rubber band to secure the pad but tape should be fine except It might get sticky and I would think it could cause it to stick to Your hand and possibly have a accident like dropping the bottle.

You will be surprised how easy it is. Most everything I know and have done is in the posts above. Relax and good luck....:thumbsup: