Is 6pm-8pm too late for 8yo birthday party?

[laserpartyplanner]

Posting on the app so can't do a poll but..

My son will be turning 8, this year he wants to have a laser tag party at a soft play venue. They do 'regular' parties during the day but laser tag is only on in the evenings, 6pm to 8pm, we'd have full use of the space. Hot dinner would be included and there is always plenty of food and it's nice.

So not really an aibu but is that too late? My son goes to bed around 9pm so he'd be fine with that. DH is also worried people won't want to drive their kids around as it will be on a Saturday evening. It's a 20min drive from our town but that's a normal distance to travel to a kids party in our area.

My daughter is nearly 8, and for us, even as a one off, it would be too late a finish. She has some weekday activities that finish at 7, and they cause argument enough with her being tired, so despite an inevitable argument, I'd be saying no to an invite that late. Her bedtime is usually 8pm, and it's not worth the days of grumpiness to be out later unnecessarily. Plus, she has a younger sibling, so having to be out and about with lifts at that time would be a nightmare.