Thanks for being willing to help, definitely worth repeating your offer, as some parents will say on the form they can help occasionally, but won't actually offer when 'we need some parent help on these three dates' is sent out.
In some cases being willing to help won't make a different unfortunately - in Guiding there needs to be someone with a level 3 safeguarding training, a leadership qualification and a first aid qualification at every meeting, so if there's only one leader with those, if she's off the meeting has to be cancelled. I'm sure it's similar in scouting too.
Please do bare in mind that leaders in both organisations aren't paid at all, and often give up annual leave to do things like take other people's children away, do the first aid training needed to run meetings, and they're fully within their rights to take their annual leave and holidays whenever suits them, even if it does mean there's no clubs for a fortnight whilst they're away, and that the community generally aren't entitled to these volunteers time, or to dictate what they do with it.
Guide and Scout units also don't have to run every week, or in accordance with schools - I know one of the first things which one of our commissioners suggested to a leader who was getting overwhelmed was to take some more weeks off - So their unit had two extra weeks off per half term compared to our unit for a while - this allowed the leader to actually run the unit those weeks, and the other alternative would have been that it closed for a while (and likely didn't re-open), and there were no meetings whatsoever. If parents had started complaining, or refusing to pay full subs (I realised you're not refusing, but I'm just explaining here), the unit would have simply closed, because she didn't have the mental space to deal with it, but the hall rent still needed payed, the girls still earned badges, and annual census is still a huge amount (compared to what parents pay to units.)
Just so you understand a bit more
Our annual subs breaks down as;
PAID 3 x £35 per term = £105 per year per child
COSTS
Census was £53 per head, which means girls paid about £66 each (as in Girlguiding, leaders have to be paid for by units too)
That leaves £39 per year for everything else.
Roughly £10 per girl goes on hall rent (exceedingly cheap compared to us hiring a hall on a commercial agreement)
so we've got £29 for activities, badges, leader trainings, ingredients, craft supplies, and everything else we do across the entire year (approx 37 meetings).
We don't charge a set fee per meeting - we work to a cost across the year, which is why we don't give discounts; there's nothing to discount if we miss a few meetings.