"Good posts above. If OP has traveled for 30 years and this is the worst thing that has happened - this is a shocker.
DL could have handled it different.
Put OP in a hotel at NRT until DL283 NRT-BKK leaves the next day (24 hours later). DL pays for a 2*-3* hotel, give him 2 food vouchers. Kick in a few miles for the trouble."
Please see my posts but I got 3 food vouchers not 2 for my 24 hours in NRT (on the exact same routing), I am jealous, I would have much much rather had his outcome then mine!