I could be mistaken, but my understanding is that it is next to impossible to export a wild collected appendix I plant. Only artificially propagated plants. However, division is considered artificial propagation. Still, Ecuagenera have plenty of lab propagated phrags, there is no need to worry about wild plants. Plus they will not tolerate wild collecting.
It may be possible to exprt some wild plant species. I've heard of collecting trips for gesnariads and anthiriums. Both of those plant groups reproduce faster than orchids. Anthriums are collected as cuttings.
About going to Ecuador and leaving with you plants, its possible. If you stay long enough. It takes a few weeks to get the right permits. Again the CITES is the problem. The phyto permit takes a couple of hours, but the CITES takes a few weeks. If you visit the nursery and pick your plants then explore the country for a few weeks, you can leave with your plants. Otherwise, Ecuagenera can mail them when they do a show in your country.
If you do select plants in the nursery to be mailed at a later date. Write your name on a new leaf in giant letters. This will make sure you end up with the exact plant you selected. Its a big nursery with lots of people working, so mixups happen. Also it may be a couple of months until you get your plants, so they may not be exactly as you remember them, so your name on the leaf will prove its the plant you selected. Doesn't look to good, but provides peace of mind.
To my knowledge, mundiflora has never been to the USA. I don't know if any of them have entrance visas. Mario did, but he may not have the time to do shows. Also, mundiflora may not have english speaking guides, however the guides they do provide have an excellent knowledge of the country and orchid species. You'll see lots of plants with both companies. You can't go wrong.
Kyle