Alcohol in Ghana is readily available, no matter where you are in the country. In Accra, you can find a good range of domestic and imported beers. Outside of Accra, your options are more limited.
In Ghana, the legal age for drinking is 18 - though this is not strictly enforced. Drinking and driving is illegal but - again - there is much room for improvement in terms of how this law is enforced.
Be aware that in the more Muslim-dominated north, rules and regulations around alcohol can vary in more conservative communities.
The culinary scene in Ghana has expanded dramatically in recent years. In Accra, you can find everything from luxury Japanese down to classic roadside vendors. A handful of restaurants have taken to re-inventing classic Ghanaian dishes, while others bring in familiar international flavours. Generally, you're sure to find something in the city that suits most palates and budgets.
Outside the capital, options are a bit more limited. You can generally expect to find a few local eateries and some locally run restaurants that serve an assortment of meat, fufu, rice, eggs, French fries, burgers and pizza.
*Fufu and banku are very similar to the starches that act as a staple in other African countries. They have a similar texture and taste to pap (South Africa), ugali (East Africa) or nshima/xima/shima (southern Africa).
Vegetarianism is not widely practiced by local Ghanaians. Meat is seen as a luxury, and will often be served to guests. Local restaurants also tend to be very meat-orientated.
That said, many Ghanaians cannot afford to eat meat regularly so there are a number of substitute dishes. Options include Fufu with a meat-free soup (vegetables or with beans), or stewed beans on their own. There are also a number of popular fruits, vegetables and starches sold readily on the street.
International-style restaurants offer much more in the way of typical vegetarian dishes. The Happy Cow provides a great inventory of vegetarian and vegan-friendly restaurants throughout Accra.
As an expat, it is expected that you will leave a tip of some kind on your bill. At small restaurants, extra change is usually acceptable. In more high-end restaurants, expect to tip 10 - 15%.
Fast food in Ghana revolves pretty heavily around chicken. In major cities, you will find the following international and African chains:
Throughout the country, you will also find innumerable roadside vendors selling grilled meats, egg sandwiches, fried plantains, ice cream, sweets and more.