There are a few images that didn't end up getting used or deleted. As a rule of thumb, if the image name looks like a file hash, or the letter suffix is "d" or later, it didn't get shuffled into the in-play mix. There's at least two in the "S" subfolder too, and I *think* a few Jasmines that didn't make it into the game.
The coke is as you discovered - almost an extra day of energy, if desired, or enough cash to get the fast food ending / not worry about working. Some folks had a hard time juggling Energy re : the diet requirements and the work outs and the work to afford food and rent, on the Frienemies path, so it's a bit of an alternate pathway for the Frienemies or Burger Queen routes.
The doors do not open.