We have visited a few meetings when on holiday and have noticed varying responses.
If my husband was the visiting speaker and on his own he was more likely to be invited back for a cup of tea or welcomed at the meeting. If he came with wife and kids we were never invited back and very little welcoming.
We visited a congregation in the midlands and were welcomed warmly. We visited a congregation in Cornwall and were not welcomed by anyone.
It does vary from place to place although a muted greeting was always more likely than an effusive one.