Largely agree, with the addendum that it's a really good idea to collect metrics as to how much tolerance your code has been required to show. Whether you need to present those metrics to the sender and ask them to tweak their emissions or simply keen an eye on them is situation dependent, but having them at all is definitely in the "future you will thank current you later" ... and I will absolutely confess that current me has cursed past me for not doing so on more than one occasion, and I can only hope I remember more often in the future ;)