"...try to avoid it."
Barbecues. For some reason everything was barbecues in our first couple of weeks. Maybe those around trying to help us settle thought it would remind us of home? Can't think why though.
Giving an impromptu speech at my predecessor's reluctant farewell took the biscuit however. I'm not sure I can give you useful guidelines if you face it yourself, except perhaps to try to avoid it. I didn't know him from Adam and it was hardly tactful to lay out my agenda for changing everything he'd cherished till now. (Maybe there's another guideline for you.)