Of course I must defer to your Chapter 11 attorney.
However, if what you are describing means that the leases are more in the nature of month-to-month leases, then I would be concerned. You have the right to assume all executory leases existing on the petition
date. However, you can't modify it without landlord
consent. Even if you assume the lease as it is written, the landlord can terminate it thereafter. So what have you gained?
If however, the 30 day provision you discuss is only available to the landlord if you are in default, then as long as you cure the lease when you assume it, then they can't kick you out unless you default in the future.
The mere fact that you are in bankruptcy cannot be a default in an of itself, regardless of what the lease says. These provisions are ipso facto clauses and are not enforceable in bankruptcy.
Let me know if I missed any part of your question!