It should be mentioned that making a proper reservation for your pet will put a notation in your ticket that will prevent you from being able to use OLCI. As such you will be forced to get your boarding pass from a ticketing agent. That agent is supposed to charge you the $150.00 fee.

I've had agents ignore the fee based on my status, and I have sticklers insist on charging the fee. Make sure whatever status you have is properly conveyed to Delta in your reservation. Don't remind the agent you have the pet if you can avoid approaching the counter with it, all the better.