Fallsview casino is the central hub surrounding the tourist area of Niagara falls, across from The Hilton hotel, and 5 minute walk to the Falls! I highly recommend parking here if you plan to go down to the falls and Clifton Hill.
There are abundant tables for various card games, countless slot machines, plenty of other game tables (roulette, crabs, etc), 1 buffet, 1 sushi restaurant, 1 diner, shopping mall, food court, night club (dragon fly), and so much more.
The casino has a sapphire room (open space of high end slot machines) and also a "big boy table" (card games mainly blackjack minimum $100/hand)
I highly suggest the first thing you do is go into the casino and get yourself a PAC card near the entrance of the casino as this will allow you to get perks and free parking.
Parking on event days range from $20-30, multiple sheltered garage floors. Parking is free for those who have a PAC card (a card you can get for free "membership" inside the casino - must play at least one hand or slot to get free parking)