I think you will find venues would be willing to work with you but in order for most venues to do a deal they would want to understand the following:
*Day of the week required - mon/fri likely to be cheaper
*Exact budget per event
*your delegates attending - are they responsible for hiring venues - what benefit will the venue get?
I’d be honest with your venues and really pin down a true budget as they will be honest in return if it can work or now and if it provides mutual benefits.
Happy to discuss further or provide a quote.