We did the same - I took the view that if I took E out one day (which was good for me as well as for her) then I could give her a better opportunity for sleep the next day. A bit like you might choose I go to an event past your usual bedtime and then (pre-children anyway) catch up the next night.
I think there are so many benefits to getting out and about, it is worth the disruption to naps. Also, if your LO is broadly happy in an EAS pattern the odd day or two each week shouldn't challenge that too much.
Have fun!!