Flytdeck,
Yes the pearl is probably one of the nicest locations in Doha, you won't get as much for your money in terms of space though compared with some of the other locations around Doha, tbh it feels like living on a marina in the Mediterranean somewhere, some really nice boats/yachts moored up there.
For you wife, there is obviously a large pool sunbathing area, plenty of top designer shops so she can spend all you winnings, nice big gym....other than that I'm sure she'll meet other people who are in the same position there that seems to be what happens with most. There is a new supermarket there too now so you won't have to trek out in traffic every time you need groceries.
The commute can be anything from 20/25mins to 45/50mins and that is purely down to traffic, depending which fleet you go on will determine who many times you'll be making that commute.
Once you get your liquor licence QDC sell all types of beer/lager from Corona to Miller to Bud etc I'm sure you'll find something to satisfy
