Thanks for the trip report @Creekland! We were in PR for the first time 2 weeks ago, loved it! We were only there 4 nights so didn’t get far off the beaten track or over to Vieques or Culebra, but we did spend 2 nights in Luquillo. Stayed in an airbnb in town, which felt very much like living amongst the locals - but, no Spanish needed at any of the local eateries or at a restaurant in Fajardo. The other 2 nights we stayed at a B&B in the heart of OSJ which was a great experience. The owners spoke English, and of course we had no language issues at any of the eateries in OSJ.
Next time we go I think we will do a day trip to Culebra, following @prezbucky’s advice! If the ferry is more reliable that is the option we would choose. Then probably spend some time over on the west side of the island. H and I plan to take a Spanish class before our next visit!