Will my guests be starving?

Having more of an unconventional wedding. Registry office ceremony and then going to a bar after for a buffet.


Guest list is 32 incl me and my fiancé so it’s a little smaller. Ceremony is 2:15 start and due to finish at 2:45. Guests will get to the bar around 3pm ish and I’m planning on serving food at 4:15pm. Not a sit down meal but a posh buffet!
Following this I’m having a small dessert table open at 6:30. We’re having donuts instead of cake and I’m buying enough so guests can have one each. I’ll also have other sweet nibbles on little platters, cookies, brownies, macaroons, fruit etc.
We’ve then got an after party and reserved a space in another bar at 10pm where ‘night guests’ will be meeting us. We’re having a night out from there basically. No food will be served at the after party as the bar is a drinks only place and those attending then have been told to eat first.
Do I need to feed by day guests more than once? I’m worried they’ll all be starving and was thinking about having a later snack at about 8pm but am also aware that we’ll be leaving that bar at 9:45 to head on over to the next bar.
Sounds stressful that we’re flitting about I know but everything is really close as it’s a city centre wedding! Any advice would be massively appreciated!