It does make perfect sense and I can hear exactly what you're saying.
The problem I have at this venue is that there's a pretty rapid turnaround (especially at this xmas event!) so once I'm given the plug, you have minimal time to get going. Additionally, once I start playing I can barely hear myself because the monitors are situated in front of me pointing out to a crowded room; I have nothing projecting from behind me.
I will continue to work on my tone alone and then be confident that in these situations all is well and good even when I can't hear myself!
Thanks for the advice