The biggest we have ever had put up in our camp was 50X20.
You can find bigger tents but why the hell would you need anything more then that.
I guess in a singles type of thing, being pre-regged for your 250 sq. You could put up something that was including the stake area 250 sq feet.
No camp fire or anything else, but the regs are pretty much not bigger then you allocated land space.
How big is this tent you are bringing to war?

Huh? Octavia, - which singles camping areawas this?
We've had the space across the road designated singles before, a few years back, (before Burning Hand got it) and you could have had a 20x24' for each individual, an awning on each, and still had parking for everyone's cars in camp. lol! And where my mates camp in singles out in the woods across from the western parking lot, theres' more space than anyone could ever use up! Imagine it as able to have actual PRIVACY - even sound-wise - between tents... ;o)

My advice would be that they should obtain themselves (self?) a pavilion they can LIVE with rather than one which will "fit-into" some camp-nazi's vision of the 'perfect camp'. Pavilions are too expensive to be selling off or replacing every year or so to "fit in"... especially since they're not in a household or space-conscious camp. If that were the need/case, - there would be nothing but 12x12' tents anywhere on site.
(which still would be smaller than the 250 sq. feet allowed per person through pre-reg even with the ropes/stakes needed)
If later on they decide to join up with a household, - they would already have their size known when they're being invited.
As for me? - I'd only camp with a group that'd want ME more than they'd NOT want my "25 sq. feet too big" tent. ;o)

Cheers and see you all sometime in about 1/2 a year!

To cowboy:
I honestly don't know. If you go to Vlad's and take the next left and go up this crumbly hill and take another left there are a bunch kind of divided singles camps that are crammed. I had a friend staying there.

Hah! Nice idea there, Emm... LOVE yer pavilion babe... ;o)

- If you're still checking back on this Shaell, - you've probably determined that it mostly depends on 'where' it is you'll be camping at Pennsic.

- If you're inside an already established camp, with a long history of camping on the same land, their land in in one of the older, more established areas, and they've grown but their land hasn't, - then you're basically, - well... - you come up with a word.
- If you're in a group that is relatively new, camping out in the B blocks or some other area with a lot of open space, - well.. then it really doesn't matter much. As I mentioned earlier, - it all depends.
What I'd recommend, (as have others on here already) for one's self, would be the large Regent - especially if there's any chance of someone camping in your tent with you either now or in the future. It's basically a 16x16 which is 256 feet of floor space, (to be picky, you can minus off the corners since the floor is really an octagon, so you'd easily be under 250 sq. of inside space) - but has the fewest poles/ropes/stakes needed to set it up of all the square tents. They're pretty, they're strong in the wind, and they give you more space for the buck than any of them. And who really is gonna get that nit-picky about 6 square feet? And ropes can be criss-crossed if you're in a really tight situation. Egads... - how happy I am that I camp where I do.... ;o)

Now... - if this entire discussion has leaned the wrong directio, and you're asking more about something like a large group tent for common space, - then all is moot and you can go buy yerself the biggest darn tent you want to. 'cause then it's all up to your campmates and willingness to either give up individual space, buying extra with "ghosts", or just camping in a place where nobody really cares... :-D

Cheers and good luck with it!