I would like to thank you for the information it is hard to get anyone to tell us what we need ,I have been getting it in bits and pieces . How far in advance do you make the reservation for the equipment in SXM ? This will be our first time going with this type of equipment , for the past 25 years we have been taking a bunch of other things to aid her. I do have a question are you pleased with your INOGEN unit ,we are looking at the 5 for purchase ,but read some no so good reviews can you trust those reviews I would like to hear from a real user . Thank you for the information