We are planning a surprise party for a friend's birthday next weekend. It's a 4 hour trip on a boat followed by a meal in a quite posh (ie not super child friendly) restaurant from 6pm onwards. We have invited about 30 people and we are paying for the whole thing, including the meal. We decided not to invite any children because the birthday girl doesn't know the children and we didn't want to then invite swathes of other kids.
One couple asked if their children aged 3 and 5 could come. We said it was ok for them to come on the boat trip. Now they're coming to the meal too, although we specifically said that they could only come on the boat. Her parents live locally so it's not like they don't have any childcare at all.
This weekend we received an email from them inquiring as to whether the boat could stop along the way in case their (uninvited) children get bored and want to get off!
AIBU or are they taking the piss?