It is touristy and ridiculous and it doesn’t matter. You need to do it.
You will have to put on an ugly blue garbage bag masquerading as a rain poncho. And on a hot day said poncho will make you feel like you could grow tomatoes in your armpits. On a cold day you will feel like you are being cryogenically frozen against your will. But this is an amazing experience you cannot miss. Looking at the Falls from the rails above is not the same. Nothing beats the sound of the Falls up close, getting soaked, and the power. Book online in advance to avoid the crowd, try and get through the gift shop at the end without buying a Maid of Mist -load of crap and you will be a happy, happy person.