I was in Hermosillo all weekend and Puerto Penasco is what they are all talking about. There are scheduled buses pretty much everyday of the week from Hermosillo and even as far south as Obregon but those are only a few a month. This place is fast becoming the resort for the locals in Sonora and thats just fine by me. It is great for the local economy, it is great for the tour organizers in Hermosillo and points south and its great for the Mexican families who can now afford a vacation within their own country thanks to the tour operators taking the lead in bringing people here. A typical bus trip from Hermosillo to Penasco for 3 days 2 nights is about 1300 pesos per person including transportation and rooms. It may not include fancy rooms but the folks dont seem to mind since they spend most of their time on the beach. The economy is buzzing in Hermosillo as well as Obregon, heck most of Sonora is doing pretty well. So its nice to see (from my perspective) the tour groups coming. I wouldnt assume that just because there is no USA holiday on the weekend that there will be rooms available any more. If I were to plan a trip here I would certainly plan ahead and not assume. (if I wanted a hotel/condo reservation)