Well done, knew you would do it :-)

I did, and you can too! In my case it was in order to meet a deadline to graduate this summer rather than next year.
Can you take any leave in the next fortnight to get it done?
How much is the workload? Your supervisor may be able to advise on how much each correction (if it's a question of additional info to put in) actually should look like, eg 1 paragraph, 1 page, etc.
What helped me was making a realistic but still fairly challenging list of corrections I was going to do every day, and tick them off as I went through them. It will probably have to include weekends, I suppose that's the sacrifice in the next couple of weeks.
List all the corrections which you may need to take advice from (eg from your supervisor), email or set up a meeting to discuss them ASAP, and in the meantime get on with the more straightforward ones.
Remember you have done very well indeed to submit a thesis at the end of the slog, which has been deemed worthy of a PhD subject to this last bit. Don't throw it away now! You don't need to :-)
Best of luck and let us know how you get on.

Can you be a little more specific?

I'm 28, been with hubby for nearly 10 years (married for 3) and we are happily child free by choice.
Which makes things much easier when thinking about an academic career!

As an addition, I am very glad you used the term 'childfree' rather than 'childless' which is the most commonly used term, particularly in the academic literature. We truly feel 'free', rather than lacking, without children.

I'm not discounting the possibility that my hormones might say "ok, baby time!" in the next few years but I doubt it.

Can you afford your own flat, a studio or something? You need your own space and quiet (in my experience).

I was very, very lucky to get the first PhD I applied for.

N-bria (hehe) is fine overall, which department is it?

I would also echo the comment that it's hard to give advice without knowing the institutions involved. I would say take the funded place - unless the ex-poly is REALLY dire. Can you tell us which institutions they are?

Sounds like they're trying to take advantage of you to get some grunt work teaching and publications out of you. I wouldn't bother - you'll be exhausted, or have dropped out, in 3 years.
Easy for me to say as it's not my life or career, but I'd wait until the next lot of funding calls come out. Plus it will strengthen your CV to have had a fully funded PhD place.