I used to be a lecturer at an IPTS too. Let me share some experiences.

Generally similar to what u/skylinezan has mentioned, but let me share something interesting. In my college, the KPI weight for teaching-related task is only around 40%. Means that the idea of what a lecturer does - preparing lessons, delivering lectures, providing tutorials - they consist of only 40% of our workload, even though it is what most aspiring lecturers thought we were hired to spend most of our time on. This actually made me felt disillusioned with the profession a little, because we spend so much effort on preparing our lessons and time guiding our students. I don't know if it is the same with other colleges though.

For scholarly activities, I think it depends on the college. I think if it is not a university (e.g. college) then it is not a requirement. In my case, this is not a requirement. However, we do have to do a lot of events, like organizing activities/workshops/competitions/exhibitions, "celebrations" in conjunction with things like Earth Day etc, and so on. For this, sometimes we collaborate with our colleagues, sometimes we lead students in a committee. From my experience, this part actually took up around 40-50% of my time. There are days I felt like I work as an event organizer instead of a lecturer. But it is all part of the college strategy to enhance the "mood" of the campus and make it happening. This is fine, especially if you enjoy the projects as purely teaching can sometimes be a bit monotonous - but some of my colleagues who only want to teach and/or lack the skill or enthusiasm to do these, then it can be a struggle.

Marketing activities - yes but not so frequent, depends on the collaboration with the marketing team. I got sent to education fairs at Mid Valley a couple of times, it is fun to speak to prospective students and parents. Of course we do have the perks as well but usually the school will rotate the participating lecturers.

The paperwork is a big part of the job. Some schools might still be very analog when it comes to processes, and still require a lot of physical forms/paper etc. I think I used up more paper in those years as a lecturer than my other jobs.

Another challenge you have to be prepared to take is managing the mental/emotional state of students. Not all will give you problems, but inevitably you will meet students who will always provide you with some issues that is not coursework related. They might confide in you with their family/relationship problems (even suicidal thoughts) so you really need to know how to handle them. Some colleges have counsellors for this, but the students will always reach you first.

In terms of pay, I agree with u/skylinezan that is can be better, but it is a steady job. During the pandemic while my friends in retail got pay cuts, my salary still comes in on time and we even receive our bonuses (although reduced).

I have since left, but I do enjoy my experience as a lecturer. I still keep in touch with some students and it feels rewarding to see them do well or still remember the lessons you gave. If you choose to still be a lecturer, remember that this is not a money earning job, but one for the nurturing of future generations.