Not everyone orders room service, so why should they add more to everyone's account. There's no way to add another 15% to the room service charge because there is no charge. It's really not a big deal to put a stack of $1's in the drawer for when you order. Do you realize you'll need dollar bills to tip the porters who take your luggage at the port ($1 per bag). I'm not trying to make you crazy.......it's just how it is.