Based on my experience, access meaning party A is allowed to visit or take the child out from 8am to 9pm. It does not define that if party A comes at a later timing, party A is no longer allowed access. However, i would advise party A to give ample timing before hand to party B in order for party B to be prepare the child. If it is difficult to communicate, best to head back to court and include the fine prints and terms and conditions in black and white.