I think anyone who plays sport betting and puts a good among of money into their bet already knows what they wishes to do with the money, most people might decide to keep it incase any issue that requires urgent attention comes up while some people spend it instantly.

My own case isn’t too different from what I wrote above - the last bet I won is still sitting in my account till this day, if nothing comes up I might deposit a part of it back into the bookmaker to gamble some more. It’s not a must that you have to treat yourself to a meal each time you win a bet, if the bet is one of a kind and you haven’t win anything like that before you could treat yourself to a meal so as to mark that moment but other bets I don’t really have a schedule or plan made already on how to go about spending my wins.