Based on the gold benefits the only area where I can see the ritz mentioned is to do with free Internet.
From previous discussions that I have seen the concierge lounge is different from that offered at the marriott properties. There is a fee payable for access to their club lounge.
Hopefully another elite member that has stayed at a ritz can offer further assistance.
The last time my wife and I stayed at the Ritz in Atlanta (Buckhead property), I emailed the hotel ahead of time to enquire about club access upgrade or a room upgrade with my Platinum membership. Like many have said, I was informed no complimentary upgrade to a club room was available, but they did agree to upgrade me to a 2 room executive suite at no charge.
Just email and see what they can do, especially if they aren't that busy during your stay. I don't know how far a Gold vs. Platinum membership will go, but you don't know until you ask.