Most unlimited plans are outlined in the AUP/TOS. Further so long as you are not impacting other customers in the shared hosting, it is not generally an issue.
That said, I do prefer to know my limits
That said, I do prefer to know my limits
"Unlimited" hosting plans are effectively geared for basic personal or small business websites only. And if you go over some soft limits they're almost certainly monitoring, they'll find an excuse in the TOS to disable your account.