i don't travel but i do train at different gyms. I train at PKG and LEGENDS here in los angeles. I've found it to be a positive experience because you get to grapple with many different types of individuals. PKG focuses alot on the MMA approach to grappling while LEGENDS focuses more on the straight nogi approach. But either way, BJJ is pretty much taught the same way for the most part. teach a few techniques at the beginning of class then grapple for 3-5 min increments for the remainder of class. The only drawback is the expense. MMA / BJJ can be expensive nowadays. I would recommend keeping a diary, paper or video of your sessions, since you will be doing a lot of traveling, you can make use of some of the time by going over the material mentally.