I've only done it a few times and have aleays had great training. I do a little homework in advance and call ahead. Recently had a great time at Limitless BJJ in Cincinnati, led by black belt Robby Malof.
If you're ever on the Big Island I recommend stopping in at Gracie Kona. Very welcoming group as well.
Me at my buddy's place the other day, even locally I get out to train in my friend's gyms to get different body types and approaches to the game.... This place has newer guys who come from strong wrestling backgrounds, so it's great to battle those types of players. My friend Eric is a super flexible, hard guy to hold down, very crafty at getting out of bad spots and makes you work to catch him, I love training with guys like that.
One of my favorite parts of traveling out of town to help out at Fightsport events is dropping in at different BJJ Academies. Today I joined the 11:00 class at Derrick Kennington’s brand-new Next Element Academy and had a great time. Thanks to Derrick and his students for the hospitality!