You probably know that the Amex Hilton Biz comes with complimentary HH Gold status. We always book the lowest cash rate because we’re always upgraded to a higher floor, often enough with a view, because of our Gold status. (That, and when we’re staying at the Hilton Anaheim, we’re really there to spend the day at the parks anyway.)
We’re also offered complimentary breakfast as HH Gold guests, but we always decline at check-in and get extra HH points instead because we'd rather open up
Disneyland and eat in the parks or DTD.
There's also a special line for HH Gold and Diamond members at the Starbucks in the lobby, which is nice when it’s busy and most everyone else is in the long line.
I think HH Gold members also get a bonus on the base points earned from stays and things like free WiFi.
With Amex cards that give complimentary hotel status, just allow about a week’s time from receiving the card and activating that benefit to actually receiving confirmation that your hotel status is activated.