Originally Posted by
FlyingForEternity
Ditto.
No on weather.
Infant tickets are your responsibility, just like visas. Delta will probably not (and shouldn't) take responsiblity for it.
The bags might get you something.
If they were given misinformation and told that they were "good to go" by a Delta gate agent, then it is 100% Delta's responsibility.
If the OP doesn't get satisfaction from Delta, he should use the links in my signature to file complaints with D.O.T.