@Jean *****************
that's not how it works. The policy is different based on each immigration office, but at that office the policy is for everyone. Just be happy you're not using an office that requires a new TM30 anytime you spend the night away from home. But the policy could change any time.
Besides that wouldn't make any sense because tourist visa people can't leave the country and return. If there was a policy it would be for working visa and not tourist visa.