Can you help me decide between biting my tongue and saying something in this situation?

I live on a lake and there’s a homeowners’ association and committees that do different things throughout the year. In the summer (now) there will be parties on the beach. I don’t see my neighbors a lot but I do try to attend the parties. One reason is because that’s one of the nice things about living on the lake and another reason is to support the events.

There’s a FB group where anybody who lives there posts things – events, photos, etc.

Today (Tuesday) between 11:30 and noon there was this posting:

“Friday is looking like a perfect night to have dinner lakeside and watch the sunset. Today is the last day to RSVP. $5 per person is due in the office by the end of business today. Unfortunately, we will be unable to change the headcount after tonight. Don’t miss out on this fun night!”

Obviously for someone who works all day, this is an issue.

Sure I can ask my neighbor to put in $5 for me and I’ll pay her back, and she’d do it no problem but I’m thinking it’s just rude and poor organization for this event to be posted this way.

Should I say something or should I not?