If you are coming to the meet you are welcome to borrow my clamp meter to confirm.
A 0.1A drain will in theory drain 16.8Ah capacity in 7 days, so a healthy 95Ah battery fully charged should be able to cope with this for a couple of weeks.
I can roughly correlate my clamp meter reading. I am now using a 31Ah LiFePo4 battery as my starter battery. These have a fairly flat & linear discharge curve between 90% and 10% SOC so state of charge and voltage correlation is fairly accurate.
For example, Sunday evening 9pm after driving around at the weekend the battery will read 13.27V in circuit after resting (I know I should be reading open-circuit, but these batteries have a very low voltage sag under light loads).
13.27V nicely correlates to 80% SOC. Not driving the car for 5 days or roughly 110 hours on Saturday morning the battery in-circuit voltage is 13.07V, roughly 35% SOC
This roughly equates to 14Ah drained over 110hours, or an average sleep mode current draw of 0.127A, so the clamp meter is not too far out.
http://smg.photobucket.com/user/o0ps...yLg-1.gif.html