The venue doesn't meet your expectations.
The forum doesn't meet your expectations
The 2nd shooter situation doesn't meet your expectations.
The problem here is the difference between your expectations and what you can provide. The solution is to use this as a reality check.
- It's nice to be able to shoot from a selection of angles during the service, but is it a necessity? No,
Plan to get where you need to be for the important shots and don't draw attention to yourself. Use this as a lesson learnt, weddings aren't there to provide you with great opportunities to take nice pictures. Your responsibility is to provide the B&G with shots of their wedding day, they knew the size of the Church when they booked it - and I'm sure that was a more important decision than their choice of photographer. It's rare for most of us to move during the wedding service. So after you've shot the bride arrival at the door, it's a swift move to the front of the church (if allowed) and stay in one spot till the signing of the register. Once the register is signed, back to the rear of the church for the B&G aisle shot. If the church is so small you can't get in front of the B&G to shoot the service, then shoot it from the aisle, just like in churches we're not allowed up front.
Yes?
If you've promised the selection of angles to the B&G, use this a a lesson - never promise any particular shots, you're opening yourself up to a host of issues, and having to explain to the B&G that things have changed before you start to shoot is a minor one.
- It'd be great to be able to get a response from a bunch of wedding photographers late at night on a peak season wedding night, but is it a necessity? No,
Relax, the answers will come, and they'll be better answers if you keep a cool head about it.
- It'd be great if your 2nd shooter had the right gear. Is a 2nd even necessary?
If the answer is Yes, then you'll be paying someone that's reliable, you could still find someone if you advertise here. if No, then your '2nd' can become your assistant, helping with groups etc. then maybe loan them your spare body for a few shots when things get relaxed.
It's not ideal for all your bodies to be in use, but if it's necessary it's not the end of the world.