Hey guys, as someone who's done this a few times before, I wouldn't worry about it. I remember with the Note 8 and S9+, I was told my phone would ship between two days before release date, and release date itself. My S9+ came two days early and my Note 8 came OVER A WEEK early. In both cases I paid the $15 for two-day shipping. This time I did the same, and it says my phone will ship on the 24th. Realistically I expect to have it by Wednesday of next week.
Relax, we are all but guaranteed to have our phones by release day. Granted, there's a first time for everything, but I doubt there will be any foibles.