I would order a sim kit from Amazon, just to be safe. Otherwise, I would place the cricket order online on 6/17. Verizon should prorate your bill for the few days you're on it following the expiration of your contract.
Be sure to read and follow these recommendations. As long as vials or pens are stored unopened in the refrigerator (at 36 to 46 degrees Fahrenheit), they are good until the expiration date on the container. Questions about the insulin's potency start when you open the vial or pen and begin to use it.
Under emergency conditions, you might still need to use insulin that has been stored above 86Â°F. You should try to keep insulin as cool as possible. If you are using ice, avoid freezing the insulin. Do not use insulin that has been frozen.