I think a Chinese dinner and cake sounds like a nice way to celebrate! You had some fun, but without spending some ridiculous amount that would blow your winnings.
As for me, I once played for 8 hours on $50. I never won any serious money, but my range of winnings and losings kept me right around the $50 mark until I finally got bored. So I just looked at it as a day of free entertainment since I walked out with what I'd had in my pocket to start with and I'd had lots of fun!