I was lucky enough to get a ballot place (but it took me 4 years/attempts to get it). You can still try it, might be lucky next time, it opens monday 29th April and usually is full withing a couple of hours.

I did collect for a charity WWF (here is my page https://www.justgiving.com/AnnaMuzza)but because mine was a ballot place, there was no minimal fundraising requirement. Charity place is always an option but the minimum I've seen is 1.5K and I'll never be able to raise that much :)