I wouldn´t give a DVD+DL to replication – use DDP-images as they are the common workflow.
you can give them via DLT, DDP on DVD or as FTP-uplaod.
in case there would be something wrong with the delivered master on DVD as VIDEO_TS, the replication-facility ALLWAYS going to say: “authoring-error, not our fault!”
this could happen especially with DVD+DL in general and the layerbreak-position.
I´ve had a few collegues (here in germany) that has been hit by this! be careful allways! or let the replication-facility (or your customer) sign a paper that they are responcable for probles that could happen using Video-DVDs as premaster for replication, if they recommend you to deliver it as VIDEO-DVD.
I´m sure trai forrester or larry applegate would agree with me.
cheers
danny