Would using your day 1 reservation have gotten you anything still? At one point people thought it would prioritize them, but there were numerous examples of non reservation holders getting their cars just as fast. Reservation holders also got the mini model 3 on delivery, but I think Tesla also lost control of that and everyone up to a certain time also got them, so you probably aren't missing out on anything by not using it.
Congrats on your purchase BTW! As an former owner are you able to use your own referral code, and thus double dip on the supercharger credits?