You can book a mini Dreams session. One outfit in the Dreams studio, only takes about 30 minutes. The Dreams packages are more expensive than the regular ship pictures. However as others have said if you say No thank you enough times you can agree on a number and package.
Yes, they will provide you the digital images.
My wife is a professional photographer, so I hear this discussion on a regular basis.
Yes, the Dreams packages are more expensive, but the quality is that much better. The photos are retouched by hand and do not just have a soft filter on them. The cost is similar to what a professional would charge if you were on land. The benefits of the Dream Studio is that everyone will be together.
I recommend getting a mini session done, the investment is only 1 hour. 30 minutes for the photo shoot and 30 minutes later to review the photos. No out of pocket expense or commitment to buy.
If you don’t find something you like or the price does not work, there are plenty of other options to get a group shot.