I found that as I wandered around the pubs (and I did a fair bit) there seemed to be quite a few sessions where the evening just 'flowed' without anyone running things - Most of the landlaords seemed more than happy with what was going on.... and so was I.
I know what you're saying though, Shambles. I've been to sessions where a 'star' or an 'almost-star' has been running what amounted to a mini-concert featuring them doing extended floor spots - I certainly didn't find that at Wallingford and some fairly big names were 'hosting' stuff.
Anyway - Give it a try next year - They are looking for stewards already (2 six-hour shifts for a season ticket sounds good to me.
(I've got me and the wife and kids volunteered already)