So, I have a job interview tomorrow for a new job, actually there are two that I am interviewing for with the same company. The HR lady was talking about scheduling and pay on the phone yesterday, and liked that I had 4+ years of experience, so it sounds promising (ya, I know, don't count my eggs before they've hatched, hope I'm not jumping the gun).
I very much dislike the job I have now. The supervisor is rather condescending, the coworkers (save a few) are very gossipy and condescending as well. There's a bunch of other things that seem small, but hav all added up over time to make it miserable.
If I get one of these jobs, any advice on how to quit amicably? I don't really want to burn any bridges permanently. Obviously, sending the boss a video of "You can take this job and shove it" isn't the best option, tempting as it is. Should I explain in my resignation letter why I'm leaving, at least the reasons that pertain to her house? Or just say "I have accepted a different job, my last day will be X, thank you."? I am mildly concerned that she'll be so pissed that she'll just fire me immediately after she gets the letter, so vacation time won't have to be paid out.
Second question, which job would you take:
A) M-F 7am to 3pm. Same pay rate as now, working in one group home. No weekends.

M-F variable hours, mostly 1pm to 9pm. $2-3 more than I get currently. Part of a floater team, so I could be in any of 40ish houses to cover other staff absences. Also no weekends.
The extra pay would be nice, but it would be really nice to be on roughly the same hours as FI. I could probably get out of the floater position at some point, though.
Oh, and this company has an employee recognition program. They send one "exceptional" employee ever year to Paris for a week, all expenses paid, regular salary for the week, and $100/day spending money. I'll be recieving that, thank you very much!