Like the sibling, I haven't found Spain too bad for this. Waiters and other service staff sometimes switch to English on me despite my Spanish being perfectly serviceable for that sort of interaction, but no-one's ever been rude to me about it. One waitress apologised when I said that I like to practice my Spanish, but explained that she also wanted to practice her English. I suspect that's quite a common dynamic.

One thing I've found is that fleeting interactions in shops and restaurants are a terrible way of practicing a language. I can have a full conversation with a Spanish person without too much difficulty, but I still find shops and restaurants quite challenging situations. So, don't go on holiday to practice language X. Pay $15 for a one hour online conversation class.