Some experiences need a child for full effect. The adult reality isn’t the same, but I remember being an oh-so-impressed 6-year-old, sitting down to high tea at the Empress Hotel in Victoria.
Some experiences are best appreciated by a first-timer of whatever age. Flying has staled with repetition, but I remember dressing up for my first flights as a teenager.
Some experiences are impressive precisely because *they* are the first-timer, redefining a genre. They look a little clunky now, but I remember being blown away as an adult by Star Wars and Batman for their special-effects wizardry and magical film editing, respectively.