The house ALWAYS wins.... the rules are designed that way...
With Roulette, your payouts are 1 chip lower than the possible number of bets...
(beucause some people used to play a chip on everything, so they cant loose.... now you can still do that, but you loose 1 chip per spin)
The dealers shuffle the cards for 7 minutes after EACH shoe is finished.
If the minimum bet on a table is 100, the max will be 5 000 (but yea the idea is there, that the double up system doesnt work) Some people still use the double up system.... but if they lose, they lose BIG.
The max of each table can be changed by the pit boss, so on request you CAN raise the max of a table (but they wont do it for small-time players). They also wont do it on a normal casino-floor table. If you are playing in the privé, they will move you to a private(no access to any other players) / semi private (no access, but has windows so people can see in) room. In these cases, you will be assigned a fixed dealer (normally one of the better dealers, or "breakers" on roulette), once an hour, a relief dealer will come for 15 minutes, and then your fixed dealer will come back again.
The "breakers" on roulette, are dealers that can spin so accurately that they can nominate the "neighbours" of where the ball will land. If a player wins too big, they can change your dealer and put a breaker on. The rules of breakers, are that 1 in 3 spins they can "nominate" numbers or do a specific number roll.... the result, you lose that spin, the dealer will spin for a number you DIDNT bet on.
as i said, the house always wins....