Once you have booked your holiday you will be asked whether you want holiday insurance organised by the travel agent. The agent may tell you that they cannot take you on holidays unless you have insurance. The insurance they offer is invariably very bad value for money (because of their huge commission). You can buy the same insurance yourself online for a fraction of the price.
When you get over to your holiday destination, the first thing that will happen is that you will also be invited to an orgainsed welcome meeting with your rep, and to meet your fellow holidaymakers. The rep will give you some general advice on the place. A free drink is often offered as an additional incentive to attend.
At the meeting you will be told of all the fabulous wonderful outings that your rep can arrange for you. A jeep safari, trip to a water park, a barbeque, car hire, sightseeing tour, nights out etc. (to name but a few that I have been on myself). Naturally you are not told about the commission, for the holiday reps employer, which is built into the price.
I remember watching a programme on TV a few years ago. All the reps have sales targets, based on the number of holidaymakers that they must make. If they consistently fail to reach the targets they are let go.
If you didn't go with the tour operator in the first place, there is no chance that they will make anything out of you.
Murt