When the wedding invite says, dinner and dancing, please follow through with food substantial enough to be considered dinner.
Or, simply state "hor d'oeuvres and dancing" (dancing hor 'doeuvres?).
This guest would have been quite happy, at this point preferred, to feed herself in one of the many restaurants she passed on the way to the wedding location.
If you do serve hor d'oeuvres only despite the misleading invitation, please see to it that enough are served to accommodate all of your guests. As opposed to empty chip baskets and dip depleted bread bowls.
You could also have the wedding in a town bigger than a thumbnail so that your borderline hypoglycemic guests can order pizza past midnight.
Failing these requests? Your guest, in anticipation of a reception meal, might just
(1) eat very little by day
(2) confidently slurp stout drinks
(3) feel slightly feint at the sight of empty hor d'oeuvre platters
(4) continue drinking with a vengeance because by now friends know her drink and are happy to retrieve from the open bar without being asked and, doesn't that feel nice? to be brought drinks without having to ask?
(5) make way to the dance floor, flinging toward only slightly willing partners (any pulse will do!)
(6) attempt line dancing
(7) fail miserably
(8) realize through blurred vision that a meal never did follow the nearly non-existent nosh
(9) black out for an hour, or two (repeating #5-7)
(10) eventually find herself back at the hotel, stumbling through the corridors in search of vending machines and, finding nothing more substantial than a Twix bar, progress to the night clerk slurring, pith-zza? pith-zaa delibbery? only to discover there is no food delibbery within 40 miles
(11) cry sloppy tears
(12) drink some more
(12) drink some more
(13) wind up passed out drunk, face down on the end of her hotel bed, husband's lifelong friends meandering and conversing above her big ass, undoubtedly wondering why the furk, at her age, she hasn't learned to handle her booze and, probably, assuming it must be a Jersey thing.
Yes. So. Wedding planners? Meals are appreciated (but only if promised).
And bride in ballet dress and gold slippers? You looked adorable.
Which is all that really matters.