Making customizable Add-ons into "Amenities" to increase ADR

[Bryan Droll]

Background: My wife and I have managed 3 properties in N GA since 2021.

Has anyone ever included customizable add-ons within their STR listing as a way to differentiate their listing but also increase profit? This could make your ADR less competitive, but if marketed correctly I'm betting that people might perceive more value, which keeps occupancy at least the same.

I'm thinking of a model where you tell guests they have "add-ons included" like grocery delivery, prepared breakfast package, attraction tickets, inner tubes, etc. So after a booking, I automatically send them an email to customize their stay with an advertised amount (e.g., $150 coupon) then charge if they want more. The numbers should work out if I price those items correctly AND not everyone takes advantage of it. But I'm sure because it's given, more people will take advantage than add-ons and find it valuable. Unlike a hot tub, I have to invest little upfront but can say my properties have unique amenities. 

It seems too straightforward, which is why I'm curious what I missed. Has anyone else done something similar?