tl;dr – Hyatt is sending out targeted in-app pre-arrival upgrades and add-on offers.
While checking in on an upcoming reservation on Hyatt’s mobile app, I noticed a shopping cart icon for ‘Upgrades & Add-ons.’

Upon clicking the icon, I was presented with an offer to add a $50 bottle of Prosecco to my reservation.

I had never seen such an offer on any of my prior Hyatt reservations (and I’ve stayed at over 100 Hyatt properties).

Though I won’t be a buyer on this offer (I may even cancel this reservation depending on my plans), I AM a huge wine fan, and I wonder if this is targeted based on past customer preferences (AI-based or otherwise) or simply an in-app offer every upcoming guest to this property receives.
Through its Milestone Award program, Hyatt has long enabled guests to secure club access and suite upgrades by attaching awards to their reservations. It appears that Hyatt is leaning into in-app monetization, offering other upsell amenities too. I’m guessing guests who haven’t already upgraded their stay via a milestone award might receive offers for suite upgrades or club upgrades as well.