Fergineer, we were taken for tea at the Ritz by our daughters. The 2 year old grandson came too.
Later, a couple at the next table came over. They said that their hearts sank when we came in but they then said they had never seen such a little well behaved boy.
Mind you he made up for it later. I have carried him, kicking and screaming, aged 5 out of a restaurant in Cyprus. At 9 he is now near normal. Give it 5-6 years