Ayup
What a shame TMA's not gone European yet!!!
In the meantime, Spaceship Mark's yer man really, but not always around. Shame he's not based out there anymore! Here's what I can think of in case he doesn't turn up!
Three days should just be enough to fit those in I reckon if you have long days & wanna whizz about a bit. A hotel in L'Orient shouldn't be TOO bad. Or could you camp? (Too late?)
We did Locmariaquer & Gavrinis & a few others in one (long) day. Another day around Carnac with Mark. Jane did a few weblogs that might give you a bit of help:
In & around Carnac (with Mark) - we saw a huge amount that may not be realistic without a guide who knows exactly where the more obscure stuff is! http://www.themodernantiquarian.com/post/36663/weblog/ More around Carnac in http://www.themodernantiquarian.com/post/37318/weblog/ I'd strongly recommend (possibly over some of the stuff in that blog) the Kerherzo alignments, Crucuno dolmen & rectangle (or quadrilateral) & the Mane Groh dolmen, just up the road. If you go to Kerherzo, don't miss Les Geants - see one of my last weblogs http://www.themodernantiquarian.com/post/37386/weblog/
Gavrinis + Locmariquer http://www.themodernantiquarian.com/post/36627/weblog/ Yes, you can take pics in Gavrinis, but you don't get long in there & don't get the chance to be in there on yer own (we didn't anyway - as you'll see if you check J's weblog).
La Roche-aux-Fées (sometimes known as Esse - with an acute accent over the 2nd 'e') we didn't actually get to see owt else that day. http://www.themodernantiquarian.com/post/36903/weblog/ but there are a few other things vaguely in the same direction that we didn't get to see - Les Desmoiselles (stone rows) near Langon, and Perrons des Grees (acute over 1st 'e') near Messac (a 3.8m menhir & possible stone row).
Or better, if you could really push it, the St Just complex http://www.themodernantiquarian.com/post/36904/weblog/
TME's pretty good on Brittany & I'd really recommend getting hold of Burl's 'Megalithic Brittany' (Thames & Hudson ISBN 0-500-27460-6) - it's not usually that hard to find or too expensive. We didn't have it at the time, but were ok coz we had Spaceship Mark for around Carnac. (He had a copy, but just knew where everything was anyway!)
No, you can't wander around the 'big rows', at least in theory, but it wouldn't be difficult to sneak in. Might be more difficult to sneak out if you got caught, but I don't know how strictly they police it.... Other than that, I'm not sure what you mean by restrictions.
Oh, having said that, you may mean stuff like, for example, you need to turn up & pay to see Le Grand Menhir Brise, Table des Marchants & Er Grah. Opening hours are pretty good tho & if the worse comes to the worst, you can see Le Menhir close to the fence.... I can't actually think of any others, offhand.
Megalithic Walks has some good stuff http://myweb.tiscali.co.uk/celynog/Brittany/brittany.htm but we didn't do much web research other than for the north, away from where you'll be.
If anything else occurs to me, I'll post it here. :^)
Feel free to mail me.
love
Moth