What do I do ? Co parenting issue ?

Our daughter ( 5yrs old ) has been invited to a birthday party ( friend from school ) 😊 It’s on Saturday coming up Starts at 3pm and finishes at 6pm It’s my ex’s weekend and I’ve got a feeling he won’t bother taking her to it Cos he’ll more than likely say it’s too much driving about Going from mine Friday night that’s when he collects her (6pm ) to his mums then back down Saturday for the party then back up to his mums then back down Sunday to drop her home His mum lives 1 hours and 28 mins away from me & where the party is . it would be nice for her to go it’s her 1st little invite from a friend at school Plus mum has probably already paid for her to come What do I do?