There are so many gambling and sport betting website that allow for instant deposits and also instant withdrawal most of the new betting site have that features, but you should also know that each transactions on the blockchain have to go through at list 3 confirmations before your transactions will be push through.
Sportsbet is the only site I have found with 0 confirmations deposits and instant withdrawals.
The 0 confirmations on deposits is perfect so I can place last minute punts.
Instant withdrawals are perfect since I dont like waiting for my money.
Am I missing any other one?