לצערי איני יכול לענות לשאלה כי איני עוקב ברציפות על פעילויות במדרכוב בן יהודה בירושלים.

Sorry I cannot answer your question. I don't buy t-shirts there. But I do know there are a bunch of places.

Nao vi nenhum, mas tambem nao procurei.

This is Israel 1st day of the week so they open as usual depending on the store restaurant 9.00am

Depende do grau de religiosidade dos donos do negocio. Provavelmente fecham 2 horas antes do pôr do sol.

The restaurant is called piccolini and it is fantastic

About 17.30 Shabbat ends and shortly after all shops reopen. However 17.30 is at this time of the year, for general guidance, Shabbat ends 72 minutes after sundown. Sunday יום רשון is generally a good day to go to Ben Yehuda Street.

I am not sure about when and how late the transportation runs after it starts up again after Shabbat. It is pretty safe. You should be aware of people and your belongings anywhere in the world you are, as a solo female. Make sure you have good walking shoes and maybe a light jacket you can stuff in a bag, as a breeze a night can be cold.