What to do abroad is a matter of personal choice. In most places, there are millions of things to do, depending on what you enjoy and are interested in. In popular destinations around the world, the tourist industry is geared towards catering to the entertainment needs of visitors.
Usually it is possible to get an idea of what the place has to offer beforehand. This can be done by exploring the destination of your choice on the internet. There are a number of travel resources online to help you find out the possibilities.
Traveller reviews are also available on many sites, making it possible to read other people's experiences, opinions, and advice. Reviews can be wonderful little tools to explore various things. From Rome accommodation on local services etc., they are all there to be explored.
Entertainment can be an important part of your holiday and it may be wise to plan activities in advance. The planning done beforehand can go a long way in helping you save money as well, as many times there are offers for advance bookings or online bookings.
For families, it can become particularly important to plan their holiday entertainment in advance as different members of the family usually want to do different things, and planning can just help avoid disappointment later on.