Time to end wedding...

We are starting at 6:30 and ending at 11:30. I think if you're serving food at 7, midnight is getting on the late side and you're right people will get hungry again.

I'd recommend 11 or 11:30

I plan on doing late night mini Philly cheesesteak sliders.

If you were going til 2am, I'd say yes, get more food. But I think midnight, you'll be fine... but I haven't been out past 11pm in years, so what do I know.

We decided because our ceremony is earlier in the day to end at 10PM. This also ended up working well for our guests with kids. We'll do an unofficial after party at a bar, I think. Anyway, I think midnight would be good but it's nice that you won't be kicked right out, you could go a little later. Our venue gives us an extra hour in our contract for clean up, but since they take care of clean up, that's really just time for them I think. We still need to discuss planning details with them, so I'm a little unclear right now.

If dinner is at 7, maybe goes for 30-60 minutes, midnight gives you about 4 hours for dancing, that's a lot/plenty of time. Maybe it's just me but I wouldn't want to stop the party early, lol.

You’re right if it was extended it would need some sort of snack

So my wedding planner told me that 3 out of her 4 weddings she has done this year have ended an hour before the proposed end time. Mostly because guest were ready to go but 1 bride was just exhausted and cut it early.

Unless you're plan on having a club banger reception then cut it off. You also put yourself at risk, if guest are drinking and driving. I don't know the law where you are but most states have some sort of social host liability policy stating that you could hold no, little, most or all responsibility if something happens to your guest even after your wedding is over. Which is where wedding insurance comes into play which is also expensive. I think 5 hours at a wedding as guests is plenty. 5:30 arrival to 10:30 end time.

We’ve got our dinner at 7 and a late night snack at 10:30, last call for the bar is 11 and the wedding ends at 11:30
I think people are definitely going to need something else to snack on, especially if they’ve been drinking all night. Our venue included a late night snack which I really like. We’re doing pizza, definitely doesn’t have to be fancy, just something to soak up the alcohol and keep people awake and dancing!

We’re doing a late afternoon reception to avoid just this problem. Destination wedding, intimate reception the month after. Starting at 4pm and ending at 7pm-ish. No DJ, but our own playlist, dance to our special song. Everybody eats once, have cocktails and cake, thanks for coming and goodnight :-)