Do you think it's alright to invite yourself to a friends house? I don't mean just turn up without notice but ask in advance or is it not good practice and you should wait to be invited.
I actually don’t think its OK to do that. Your friend may have good private reasons why he/she does not want visitors at their house but may be embarrassed to tell you no. A better idea would be to arrange to meet somewhere...mall, coffee shop, etcetera or to invite them to yours.
Think it depends of the definition of friends - am happy to say people I call friends are welcome anytime - we've seen each through good and bad times and there's no need for invites - aquaintances need an appointment though!
good point rsvp, but if the OP was that close to the person they are asking about, then they wouldn’t have to ask?...or maybe vice versa and the OP is unhappy about “friends” not waiting to be invited?
One can pop around unexpectedly if your stay is only a few minutes, although folk not naturally tidy might get miffed. Longer and it is fine to ask if it is ok. The unexpecting host can then say whether it is convenient or not.
Yes, if you are friends there should be no awkwardness in saying "Can I pop in". I would draw line at expecting to be fed and watered, although a good host will offer.
I often say to friends "I am passing your house later, are you in?"
yes, the second gives person a chance to say...”Oh not for a few weeks I am afraid, I’ve got the builders in” or make an arrangement or suggest a meeting somewhere else. If they say “I’ll get in touch when I can" or something similar, take the hint.