Has there been any comment on whether the 30 foot domes are attractive for weddings? What kind of wedding party would they best suit?
They have been used in weddings. I suggest that weather permitting that you have it set up in the Open Arch form (https://shelter-systems.com/arch-domes.html ).
Can two 30 foot shelters zip together to form a larger auditorium and where most people are still able to see each other.
Two set up in the Open Arch form can be joined at the arches.
Also may the tent poles be purchased separately from the tent and fittings? I live in Auckland, New Zealand, 3000 miles east of Australia. Rather than freight them from the US it might be easier to get the poles here.
You can save 10% off the price of the dome and of course the cost of shipping the poles if you provide your own poles.