I occasionally run across providers who provide overnight sessions. The range of overnight donations I've seen run from 600 $ up to 1500 $ . And then there's the fact that the durations of these sessions vary. Some providers do it by 8-12 hour time blocks with no specific start time and finish time (Example: Provider A provides 12hr Overnight session for X$. Provider B provides 10hr session for X$ ). Then there are some who have a permanent set start and finish time (Example: Provider A provides Overnight session from 7pm to 9am, Provider B provides overnight session from 10pm to 8am). This is a topic that has often confused me. For now, I just go for a simple 1 hour date. But maybe down the road, I might decide to save up for an overnight session for a special occasion. What are your thoughts (Both Hobbyists and providers) on overnights (Both Incall and Outcall) ? And also, what one should look for in regards to booking an overnight session? Come February I just might decide to book one for my Birthday.

As a reference check the Atlanta board (early June) for some thoughts from that general area both provider/hobbyist.. I believe it was discussed not too long ago on the Vegas board as well.  You will get many different perspectives.  Here is mine...  

I recently found myself in the same scenario wondering whether or not to take the "plunge", okay, spend the dinero for an extended (12 hours) and/or an overnight..
 
It really should be with someone you've seen before and have made a solid connection.  There is a hell of a lot of difference between 2-3 hours of private time (my normal fun) and staying with someone for 12 hours or overnight.  Do your research and invest a little upfront in the shorter time frame to make sure it is someone you really would like to be around for an extended period of time.  Most, not all, will require a certain amount of public time followed up by private time.  This is important to understand as well as work into your plan for the time.  

My opinion is you are taking a hell of a chance on both sides if you schedule an overnight with someone you've never spent any time with at all.  Have people done it and had a great time, absolutely.  As you stated though its a luxury that a lot people have to save to achieve. It would be bad to have an extended period scheduled with someone you've never spent time with only to discover that you really don't have any connection.  
 
My two quick scenario's (yes I've done a 2nd one since the 1st one if that says anything) and yes I would repeat both especially the 2nd one..  I had already seen both ladies for a multi hour visit prior to doing the extended with either.  
 
1st - Was more of a concert/dinner/date followed up with private time back in the suite.  This provider doesn't do overnight and is clear about not waking up in your arms the next morning, but I knew that going in.  We had a fantastic time both in public and in private.  Cost is there, but it worked for me and all of the time was spent awake and enjoying each other.  
 
2nd - This was a true overnight and I loved every minute of it as we never left the room..Her choice.. I offered, she would have none of it..   It was non-stop all night and we never even dozed off.  I honestly didn't realize I had it in me...  Again, not inexpensive, but there was no time spent sleeping with this one (this is not the norm by the way, most ladies will build in a certain amount of sleep time and I get that)..  The trade off... Due to some work related issues the following day, I wound up being up 40 hours straight before I got some sleep.. that hurt, but I'd do it again tomorrow...  

In summary... Yes, absolutely worth it in my opinion with the right lady and I look forward to spending some extended time with more ladies down the road.   A little research goes a long way and you are on the right track asking additional questions here.  

My 3.5 cents.  

Have fun and enjoy your first extended when it happens.  You will be nervous as was I especially for my first one.  The rest will be a little easier as time goes and you will be a little wiser too.  I'm looking forward to and doing research for another one down the road

The best part about an overnight is having fun at your pace without ever having to check the clock. Ftu pretty much covered everything and I strongly agree that you should only do it with someone you're well acquainted with - it'll be a long night if you're sexed out at hour four and realize that you don't have much to talk about. If the magic's there, you may stay in bed all night, or you may go out for a wild night on the town with guaranteed action before and after. Just be sure to communicate your expectations and be open for improvisation.

I would suggest booking two or three hours with a provider that you have "clicked" previously with rather than spring for an overnight right away.

Very true. I moved from 1 hour dates in favor of 2 hours because it's more relaxing. Even 90 minutes is better than an hour. I really don't know how people can do QV's for 15 or 30 minutes. It just smacks of "hurry up and get me off!"