In my punting life I have only done 2 hour meets with one lady. The reason behind it being that I had 2 very good meets with her previously, and that she was reasonably priced. As I wanted another session of pleasure with double the time, I had the intention of having sex with her throughout the whole two hours with her, so good was the fucking I had in the previous meets. However as much as I wanted to continue to the end, and I had the energy to do so, I was not able to as the lady wanted me to cum at about 1hr and 15mins into the meet. The rest of the meet was made up by a massage, and then a shared shower. I am actually unable to cum multiple times during a meet.
In hindsight, I now believe that in order to have sex throughout a 2hr+ meet, I would have to cum multiple times (probably 3 or 4 pops), and have brief breaks. Also I now think that after a long while the sex can start to get repetitive.
With that experience, I started to think what other things I could do in a 2hr+ meet if I decided to embark on one. From that I felt that having a longer meet with a WG you've seen before is a good opportunity to try new things. In my case those new things would be services like roleplay, strap-on, BDSM, tie & tease, toy show, etc and specific sessions for 30mins like face fucking and ass worship. As there is more time and you've seen the lady before, there is a feeling of comfort when embarking on those services.
For me the main downside to doing 2hr+ meets is that they are more expensive. However from thinking about this further, they present an opportunity to try new things that you'd probably are unlikely to in a 1hr meet.