Getting married on a Friday so I know this type of thing is self inflicted. Wedding guest cannot make the ceremony time, but has informed us they will be arriving 1-2 hours after the ceremony has finished, presumably in the time in which we will be having photos, drinks, chatting to guests before the meal. So, a few AIBUs:
AIBU to be annoyed at being informed by the guest (not asked if it's ok) that they will be arriving at a different time to the one stated on the invitation. For background, said guest asked me more than once to move my wedding entirely, even suggesting 3 different months (other than the one DP and I chose) that would suit them better.
AIBU to not want the disruption of the guest arriving at this time, possibly entering the ceremony late if it runs late, and having to consider them for meal timings if it runs early (time given of their potential arrival was extremely rough).
WIBU to ask that they just come for the reception?