Questions about activating unlocked Galaxy S24+

I pre-ordered the Galaxy S24+ from Samsung and it is supposed to arrive tomorrow.  Will the activation process use eSIM or do I need a normal SIM card?  I am already an Xfinity Mobile customer using a Galaxy S20+ purchased directly from Xfinity in 2020.  Can I visit my local Xfinity store to get the new S24+ activated on Xfinity Mobile?