Though I only fill in on days off from the hospital, I can try to help you out with what I know. (Again, I only work PRN for WMT so may not be fully representative of reality)
City/State you are located in?
SouthEast (sorry don't like sharing in open posts, PM me if you need to know this)
Job prospect in your area?
Similar to others, in that large urban areas in desirable suburbs are hardest followed by urban low income areas, followed by rural/long commute areas likely being the most open for new hires
Average salary?
was low 60's but I believe it is now high 50's (58) for new grads
Vacation time?
I can't give you a good answer on this d/t my PRN status (though of note is that even with PRN you supposedly get vacation accrual and need to take it each year, so keep that in mind, as I didn't realize this)
Benefits?
I think now you can get dental/life/vision/etc without a minimum amount of hours, health insurance will require some minimum number of hours though. From what I saw the benefits were about the same if not a little better than the hospital I'm at (at least for premiums on Dent/Vision)
Job satisfaction?
I think most like their job, and typically varies from store to store with Sams>NH Mkt>WMT, this will vary widely on: 1. What day you ask them (ie is there only a temporary staffing issue that is affecting them, etc). 2. Store location and Volume (some actually like a little higher volume, but as others indicated the connexus system doesn't scale to high volume well/efficiently, not saying it can't be done but its probably harder to do 300+)
Number of scripts per day at your store?
I work at various stores and only a few times per month, but a snapshot would be anywhere from around 100 for a new-ish NH Mkt, to 500-700 for busier supercenters
Work hours?
9-9, I think most do at least every 3rd weekend, if not every other
Balanced family life?
Yes, I think so, even the PIC's I see seem to have a decent work life balance (though slightly less so than staff rph's)
How negotiations work with Walmart?
I would get advice from someone that has applied FT on this. I gather that there isn't much negotiation now on pay or even vacation for most stores, but if they put you or ask to put you in a less desirable store or location (inner city or smaller community a decent drive outside a metro) you might give it a try, but be reasonable and respectful, since I'm pretty sure its an employers market in most areas.
Sorry I couldn't provide you with better details, but still hope this helps!