Help on JM's 30 Day Shred -

Please help - I am looking for educated opinions on this. I am looking to go back to the gym (at which I am already a paid up member) - life has been SOOOO crazy lately between traveling and my honey being sick, that I have been doing my workouts at home or on the road with Shred and Turbo Jam - but now I need to get back into my gym routine. However I made the commitment to stick out shred til the end of May. Can I just do the routine at the Gym even without Jillian yelling at me? Or is it no good if I don't do it to her timing with the dvd on? I know it sounds stupid, but will it make a difference (I go to the gym Mon - Fri, I would still suffer with her on weekends).
I did go to the gym today and did do level one shred on my own. Kinda felt dumb moving from routine to routine but I did it ALL. I just want to know if essentially it will be the same. Any ideas? Oh, by the way, I am on level one and will not be moving to level 2 anytime soon - so it will only be level one, and I am on day 14 if that makes any difference. Thanks for your help!