I was beyond excited when we bought this house last year knowing full well the fifth bedroom would be used as a full size pantry. The room is located on the lower level of a bi-level home. It is approximately 11' x 10' so has ample storage space. The pantry is home to all of our home canned foods, dried foods, two chest freezers and specialized kitchen appliances. I have spent a considerable amount of time restocking and organizing the pantry over the past few months.
If you look close, I like using painter's tape for labeling. It comes off cleanly without causing any damage to the cartons or shelving. I use a Sharpie to write on it. It's not high tech but it works for us.
There is a bit of space above the freezer where we are thinking of adding a cabinet. So there is still a fair amount of potential for increasing the storage in our pantry. It is still not fully stocked but I'm working on it. I am pleased that so far the pantry is organized and progressing nicely.