Originally Posted by
yurtripper
I've found using the chat app is a good way of asking for an upgrade if nothing is showing on arrival day and you're hoping for something better, but honestly it's not that often I ask.
I usually use the chat app when I do online check in and ask for an upgrade to a specific suite if I want to try it (if it looks interesting in the app) or just ask "as a titanium elite, would it be possible to get an upgrade".
It does depend on how long I am staying though as it's harder to get an upgrade if I am staying on a 7 night business trip vs a 2 night stay.