Hi MissG
What a great opportunity!! You won't be alone with your sup for 4 days - once the conference gets underway, you'll both be networking madly and probably won't see that much of each other. Make the most of it and make some good contacts. I've spent a couple of days alone with my sup, and it was wonderful. We really got to know each other, I got to know her history, and picked up lots of tips about academic life as well as got to know her better as a person. We also had fun! Treasure this - these opportunities are the things you'll remember about your research, and the biggest steps you'll take. Enjoy!