From the online manual (can't compare with OM that came with my car as it's in glovebox and I'm not):
Switching to cruise control function
When the MODE switch is pressed until the system switches to the cruise main indication (white) while the MRCC with Stop & Go function system is turned on, the system switches to the cruise control function.
When the system switches to the cruise control function, the indicator and multi-information display notify the driver as follows:
* The MRCC with Stop & Go function set indication (green) or the MRCC with Stop & Go function main indication (white) is turned off, and the cruise main indication (white) is turned on.
* A message is displayed in the multi-information display.
So yes, it appears you can use cruise without MRCC. (I have not tried this.)
Canceling the automatic folding function
To cancel the automatic folding function, carry out the following procedure using the master control switches.
1. Switch the ignition ON.
2. If the power window lock switch is in the unlock position, switch it to the lock position.
3. Press and hold the front passenger's power window switch and rear left/right power window switches on the driver's door at the same time for 3 seconds or longer.
NOTE
* The automatic folding function cannot be canceled if the procedure is not completed within the specified times, or the procedure is changed along the way. To redo the procedure, first switch the ignition off and proceed from the beginning.
* If you are unable to cancel the function despite doing the cancellation procedure, consult an Authorized Mazda Dealer.
I have not tried this. When you switch the ignition on are you starting the car?