1: Repairing the shield will cost half the cost of the shield. I don't think your shield was special, so unless you're planning to upgrade, I think it's worth the cost.

2: You all have about 4 hours of usable time that evening- assuming you don't want activities to cut into sleep and risk being fatigued the next day.

3: OOC- between me and you, there will be a significant opportunity for down-time retraining and such, at the end of this book. We're give-or-take 1/2 to 2/3rds of the way through it, in terms of actual encounters, but it will take you through the next like 3 levels. There really isn't sufficient time to explain the retraining opportunity before then.