Does anyone know what retreat sites Daltaí has looked at in PA? I was looking for some retreat centers in PA since I live here so I could try to be helpful.

Well, I don't know what sites have been looked into,
but my vote would be the Xavier Center, a retreat center located on the campus of the College of St Elizabeth, in Convent Station, next to Morristown, NJ.

It's on a beautiful campus, and seems to have the kind of facilities an immersion weekend would require.
Plus, rare among retreat centers, there's train station right on campus, with a direct train connection with NYC's Penn Station. It's not too far from Newark airport, and major highways Rt 24, 80, and 287.

Here's a link:
http://www.xaviercenter.org/Inside%20XC.htm

Le meas, Paul

Is that somewhat close to PA border, like how far would it be from Allentown? I know they wanted either PA or something easily accesible from the Southern states (Maryland, Virginia etc.)

It's approx 49 miles from Easton, Pa, per MapQuest.

I don't know if it's in the perfect location.
But it's a comprehensive comfortable retreat center,
in a beautiful setting, great mass transportation,
and close to major interstate highways.

Paul

Sounds great but whats the rates like ?. Remember that the rates have to be kept down in order for everyone to be able to afford it.

if it's so near a decent train station, that might mitigate some of the travel burden.

rates need to be about what they are now
and it needs to accomodate at least 100 people...

A chairde,

Per the link provided: they can accomodate up to 134 people.
I don't know about their rates: I do know they host a lot of local church groups and 12-step organizations.
Offhand, it doesn't appear upscale or anything.
The best way to determine whether this facility meets the criteria would be contact the Xavier Center.

Le meas, Paul

Maybe they aren't very expensive if they host church groups, many groups like that can't afford very expensive rates.