GL with the plans!

DH and I eloped last year and had a 'reception' dinner a month later with friends & family. One reason for eloping was the sense that some people believed they had a right to be involved and invited. They don't. Do WHATEVER makes you both happy because you're the ones who are marrying. And remember, you're the ones who have a marriage ahead of you!

As for the cemetary, I think it would be ok but I agree that you'll need to check the redtape. Technically you can get married in a toilet cubicle as long as you, your DF, celebrant and 2 witnesses can fit - and arguably you wouldn't need to ask permission for the cemetary as long as you didn't get caught (but that's perhaps a bit disrespectful, and you could be in trouble for trespass).

All the best - make sure you have fun!