You get breakfast only if you got the club floor upgrade. And from the last upgrade (1st time) that I got in x'mas, they said it is because I am an IC-A member. See my post
here for detail about the upgrade.
I talked to a staff at CP TKO and she used to work for the one in Causeway Bay and she said that they don't give upgrade to club access (I'm used to Marriott lounge policy not CP).
I didn't realise that IC Ambassador will have that effect in a CP.
So the perks are definitely better at the one in Kowloon East - since you get breakfast also on point stays (for the member only though).