It's been a few years but it is a Magic place. A bit lower key than DXB,AUH and a bit older thought there is lots of development going on , but not to the same extent as DXB.
You can eat out for as cheap or expensive as you like. There is only the usual ramadan restrictions on eating and drinking.
Big western style supermarkets in the malls. Carrefour or auchen I do seem to remember. Adliya district has good eateries for all tastes and a few hotel based bars.
A Friday brunch is well worth it at the Diplomat/Crowne Plaza or the Ritz Carlton. All you can eat buffets with usually freeflowing fizz for about 15-20BD. ph.
Decent gold souk and gold mall. A few Western style shopping malls which occasionally do very good sales. Locals are friendly enough. Use Bahrain Limos as cabs if you can. All Mercs and on the meter. Saves the haggling etc with the standard ones. Gotta book them though. Enjoy!!