Some people are able to keep up a normal life during treatment. But this depends on the type of chemotherapy they get and their overall health.
You may be able to take time off work and work fewer hours. Plan ahead so that you can enjoy your social life during the moments when you most well. You can take pills before meals to control nausea. If you have an important event to attend and don't want miss it, your treatment date may be able to be changed, so talk to your doctor.
If you travel abroad on vacation, it is very important that you do not have any "live" vaccines. Ask your doctor if you need any vaccines and whether it is safe for you to have them.