Are they allowing family/friends to attend our graduation after basic?

First, good luck i basic. Put your heart into it. Yeah, it will suck at first, but it gets better at graduation day, and then the suck will be replaced with pride. Realistically speaking, it's 3 months away, so things could change between now and then. You won't know for certain until a couple weeks before graduation. Interestingly enough, my report date was 10 May, 1990 at Fort Leonard Wood, A/5-10. Good luck.

It is situational. Need to speak to the Drill Sergeants.

At the moment all graduations are virtual. It will depend on what Training and Doctrine Command says at the time of the graduation. I am CPT and at my recent graduation from my course it was all virtual. The issue is that bases do not want to bring people into bases that can spread covid.