QOL depends on your situation. It can be very good on reserve if you live within an hour, or so, of ILN (two hour reserve call up). It can be very good if you are a line holder who can hold weekends at, or near, where you live. If you're just on reserve and commute it isn't all that great. Wilmington gets old pretty quick.
Bid periods are calendar months of either 30 or 31 days. (February steals one day from Jan and Mar so that they are all 30 days long) Reserve lines have 14 days off, hard lines have 15 days off.
The 767 is the only aircraft with any lines over 65 hours. Doesn't really matter, though. Any additional flying you do on days off is paid above guarantee regardless of how far below guarantee you might be otherwise. Any additional days are paid a minimum of 4.5 hours or the greater of actual or scheduled time. I've been averaging about 300 block hours per year as a line holder doing little, or no, extra flying. I'll be just under that this year.
Per Diem is $46 per day domestic. You get the full $46 if you land at another airport, it's not prorated by the hour or minute. That'll probably total around $7500 per year after subtracting out vacation and training days (which don't earn per diem). $41/day is tax free, $5 per day is taxed. That usually changes each year on Jan 1st.
Let's say you're a 3rd year DC9 FO making $99 per hour. Your guarantee is $6435/mo, $77,220/yr. If you pickup a trip on a day off you'll get a minimum of 4.5 hours which is $445.50 plus the $46 per diem. There are trips which pay over 8 hours in a day (deadhead legs are paid at full pay) so you could make as much as $800-$825 plus per diem for one extra day.
A lot of guys pick up a couple of trips per month which could give our 3rd year F/O an extra $14,000-$15,000 per year with per diem. Some guys really load up on the open time and can nearly double their base salary. I know one 5th year DC9 F/O who made $172,000 in 2004. 767 F/Os who fly that much are over $200,000 but that will take a bit more than three years of seniority.
I have no idea how to get hired. They aren't officially accepting resumes. I did hear some talk that the chief pilots were hinted that they'd take walk in's but that could be just a rumor. Some guys who've been through training recently said that the instructors were told that there could be new hire classes after the first of the year. There's also talk that they are planning on upgrading the four remaining second officers, leaving only PFEs on the DC8 panel, so any new hires would go directly to the right seat. No firm info, though. Just rumors.
Regarding Riverside... I've talked to a couple of guys who've flown RIV trips and they've said that the RIV operation is running smooth and on time. I haven't been there yet.