it very much depends on who you booked with
assuming it's disney direct :
if you decide to let that person on the booking, then yes, you can use their dining credits, they're all pooled
but as mentionned, you'll need to pay for their tickets.
if you decide to take that person off (granted they're not the lead guest) you will be refunded their ticket, minus a £50 amendment fee, and you'll lose their dining credits.
whatever you decide, it has to be done at least 14 days before check in. No change is allowed inside the last 14 days.
and you'll need to call if you decide to amend the booking.
if the person not going is the lead guest, then it's a major issue, and you need to contact your reservation office
if you've booked through a TA, they might have cancellation policies, and in that case you might better be off leaving things as they are, and enjoy the extra meals
if you have
DDP the hardest thing to do is find additional TS reservations, and the second hardest thing to do ... will be getting on that scale when you come back
