How long can E.coli last in test tubes of Terrific Broth in a 37 Celsius incubator?

I may not get to them today and the weekend is already upon me. Will they still be okay if I just let them sit in the 37 degree incubator all weekend? Do the test tubes still need to be shaken vigorously? When I grew them in the tubes, the procedure called for an incubator/shaker. But like I said, I may not end up using them by the end of today, so does that mean I still need to place them on the incubator/shaker all weekend?

On a side note, how long does E.coli in petri dishes of Tryptic Soy Agar last? Pretty much until there are no more nutrients or something?