Join the club, aj.
I suspect they will try to get you to use a CPAP (or APAP or some B-PAP, or whatever variation you need). It will be tough to adapt to, most likely, but my advice is to give it your best effort. But, let them know if you are not comfortable because there are many different types of masks and machines. Finding the right one for you will make a huge difference, and it's their job to do just that.
My first experience with a CPAP in Niagara Falls was miserable, and I never got used to wearing the damn mask. The person in charge was not very attentive and had few alternatives for me. OTOH, when I got retested, and re-prescribed a CPAP in San Fran, they did a fabulous job of finding me the right machine and mask.
I couldn't use a full mask, and have to use one with nasal pillows, like this: http://www.cpapdiscountstore.com/catalog/images/Breeze.jpg
Also I have to have a machine that has some sort of exhale pressure relief (like C-Flex), a ramp-up setting and a heated humidifier. I had a fantastic machine, that shorted-out recently (you'd think a machine with a built-in humidifier could withstand a bit of water spilled if it tipped over). As I have no health care, I am back to being unregulated and it is taking its toll on my health, it seems.
The machine I had was very expensive (I think about $2000 when it first came out) and can't be fixed. I am looking for a less-pricey replacement that does everything I need. Fortunately I no longer need a small portable machine (that adds to the cost). If you have health insurance they should cover the whole nut. If you are paying out of pocket and still looking for a machine, PM me as I have done a bit of price research on the web.
Finally if the machines don't work, or if you simply CAN'T use one, there are other solutions these days. Some of the facilities (like the one I used in WNY) are simply CPAP-pushers and really don't offer alternatives, so they will discourage any alternative.