I prefer advance bookings. Rarely get messed around as I tend to see the more mature gentlemen who I filter heavily.

I would not miss out on a 30min booking as quite a few of my 2 & 3hr regulars started with a 30min booking to test the waters.

Most of my bookings are advance

However none of them are 30 minutes.

I see 30 minute sessions as inbetween my advance bookings for clients that call up on the day asking if I have availability.
And I already am in the flat and they are in my city.

If you don't know this client/never seen him before then I would definitely prioritise 1 hr bookings.
And I would let this client call me on the day to confirm.

I actually do not mind doing 30 minute bookings but this is because the price is not that far away from my hour so better value for me if someone cannot do the hour or stretch to it financially plus the half an hour is a once cum so good for me.

yes, it is convenient 30min if you calculate...much more interesting fees/hr! but once you get ready...it is better to get more money!
if i can choose i prefer to have 1hr booking as go fast! i get used to long booking so for me 1hr is so short and fast

for that now i m taking long booking, i get used and i build up endurance!
the time to deal for 2hrs or 1hr or 30min i mean to arrange is quite the same, getting ready quite the same, clean my flat same
so...i prefer to keep more money in once! but i am low volume! i guess that for high volume ladies maybe it is different approach!