I'm sure the answer is obvious but I don't know it!
I'm changing internet providers and have received a new wi-fi router from the new provider. The new provider will start in a week or two.
I can just connect it up now and use it with my old provider, right? I don't need to wait? Presumably worst case I'll need to restart it when the provider switches?
The old router is getting a bit flakey, hence I'm keen to ditch it asap.