it's increasingly difficult for UK citizens to return home if they have a non British family, the visa process is a nightmare and the overall financial requirements are huge.
I've just told you how. And Brandon told you in the first post. You have a choice. Do it that way using "visa exempt/no visa" or apply for a tourist visa before you arrive.
there's is no automatic tourist visa on arrival. There's is a visa exempt entry where you have NO visa but are allowed to enter for 30 days and can extend that for extra 30 days.
the 30 day visa exempt ( no visa) entry is not a visa. It's permission to stay 30 days without a visa and then go to immigration to apply for extra 30 days.