We're consolidating all of our hosting providers onto one provider, however, this provider is strictly a hosting provider, they are not a domain registrar. The question I have is how important is the choice of registrars? Or in other words, if I point the domains to the hosting companies name servers, can the reliability of my registrar affect my websites in any way? If the registrar were to go down for a few days would that impact the accessibility of the websites? What would it impact?

Thanks, Harry