We are aware the costs of the individually organized accessible shore excursions are very expensive, sometime really too expensive for only 2 people.
Unfortunately the cost to rent an adapted van (which most of the times can accomodate up to 3 wheelchairs and 3 ablebodied companions) is approx the same to rent a coach and an official guide will cost to us the same if it'll escort a party of 20 people or only 2 people.
But if you will share our rate with other people cruising on your same ship you'll pay a more reasonable rate. It may be half or a third of the cost for 2 people only.
The problem is how to be able to meet other people on your same cruise and with your same need to to spend less and to ejoy your cruise.
Due to privacy laws enforced in many Countries cruise lines can't give the names and the emails of other disabled customers.
But a way still exist for smart people!
There are on Internet some websites specialized in cruises:
One is www.cruisecritic.com.
It has a forum (boards.cruisecritic.com) with many items too.
One of them, in the Special Interest Cruising directory, is addressed to Disabled Cruise Travelers.
A second one is www.cruisemates.com.
The forum is:www.cruisemates.com/forum/disabled-cruisers.
An other is www.cruisereviews.com
The forum is at http://cruise-chat.com and there is a Disabled Travel Forum.
On each of these forum you can register for free and write a message with your cruise information and your request to find cruise companions to share the cost of the shore excursions.
Thousands of other disabled cruise passengers will see it and may be they will contact you to share the costs of OUR expensive shore excursions!
THere are other websites addressed to cruises and other forum too, as much messages you'll post as much easier will be to get results!
If you are booking your cruise and other tourist services trough a travel agency (or if you are a travel agent booking for your customers) no problem, we will pay a commission but the cost for customer will not change!
Good luck and Good cruise!