i went to the loss (iirc to pittsburgh?) in 2015 and had no idea they were coming back out to celebrate. Same, I went across the street to the Cubby Bear and noticed the celebration on tv there( I hate the Cubby Bear but we had out of towners with us that insisted on going there) Actually the game I'm referring to is the day before. They would have clinched with a win at the Friday game (and had the tying run on 3rd with 1 out but couldn't score), but instead they lost and then that night the Giants lost, clinching the spot. The next day they had planned to celebrate win or lose but I don't think they told anyone beforehand.