Looking for suggestions on helping my friend. His family of 5 flew into ATL from MAN on 3/17. His connectly flight from ATL to SLC (DL 709) was oversold. When he got to the gate, he was told there were no seats and they couldn't get enough volunteers, so they couldn't board his family (he didn't have pre-assigned seats but was confirmed). He was at the gate about 40 minutes before departure.

Each member of his party received $400 Delta Dollars and was re-routed the next day to SLC (after on overnight in Phoenix .. yes Phoenix).

I know that a voluntary DBC is $400 Delta Dollars max. But what are his rights for Involuntary DBC? Is it still the $400 Delta Dollars max? Two days have passed ... is there any other compensation he can still get? My guess is that once he signed for the voucher, he released Delta from further claims.

Separately, since he lives in England they told him he could give the vouchers to someone WITHOUT going to a ticket counter and do the ticketing in-person. Ever heard of this? They indicated that since he is a British citizen and lives far away from a Delta counter he can do this. I'm skeptical that the language on the voucher is any different than a normal DBC voucher.

Thanks in advance for any help

Happydad

P.S. My flight on 3/17 from CVG to SLC went over by 5 (DL 703), but they had no trouble finding 5 passengers for the $400 offer. Looks like 3/17 is a good day to fly into SLC if you are looking for bumps!