Can you get i94 here? And do they open on the weekends? Hours please?

I-94 can be purchased and processed in Pedestrian West, San Ysidro, and Otay port of entries. Opened 24hrs; all year long.

Yes both at the San Ysidro and Otay Crossing.

You would need to take either the 5fwy or the 805 north they are open most the time, normally always open, check their app cbp