I'm currently staying at a mainline Hilton property. I was just told by the front desk associate and later the manager when I inquired for more information that they forbid uber eats and other external delivery services for security reasons and required all guests to meet any delivery person in the lobby. I've never had a problem with this before and was curious if anyone else had heard of this. Suffice to say it gave me a horrible taste for Hilton in my mouth.