Question:  Did you want Vince and Mae to go through in detail of their shopping experience or are we allowed a certain measure of time skipping?  The groceries would be mundane enough and Vincent isn't going to feel a need to consult Si for knowledge on where to get the meds.  It is his home planet after all and the less honest dealings within the family business would have established a few trusted contacts throughout his years on the job.  It's likely that Vince will want to show off his resourcefulness with finding the more difficult to access goods by his own merit.  I feel like it would be more entertaining to focus more upon gathering things for the infirmary than it would be for the foodstuffs.