The day's mission was to obtain two new SIM cards for our iPads so that we would have data coverage in Portugal; we're establishing quite the collection of SIM cards, I'm sure the teeny things will soon amount to enough to cover an entire wall! I did a quick search using the marina's wifi to determine preferred data providers in Portugal, then sought the store locations on a Google map for both MEO and Vodafone (doesn't hurt to have one of each to ensure the best coverage). And we were off to Porto, but first a browse through the local market near the metro station.
Portuguese fishermen fish at night; during overnight passages along the coastline, this tactic was proven often when the AIS would display entire fishing fleets exiting their harbors at the same time. In the morning, the night's catch is fresh at the market. The market near the metro station felt very local; fish, produce, and chickens, looked healthy and fresh, few people shopped, and there was not another tourist or camera to be seen.

By happenstance, we stumbled upon another market along our route in Porto. This market, although seemingly older and local, was totally touristic. The aisles were crowded with photo-snapping, gawking tourists (ourselves included although we were legit price checking too). Here we paused for a very affordable, 10-euro lunch which included a mini-bottle of green wine (remember, not the color simply young grapes - the wine was white), a plate of calamari/rice/fries/salad, and a plate of shrimp/rice/fries/salad.
Just 'round the corner, we hit the big time! Porto's shopping district.

At the mall, MEO and Vodafone were right beside one another. Brian and I each hopped into line at a different store. MEO provided me with 2GB of data, including the SIM card, for 10-euros (our typical monthly usage is 2-3GB). Vodafone provided Brian with 30GB of data, including the SIM card, for 30-euros (whoo! we can watch VIDEOS!). Mission accomplished!