Senses spa help

[CaitiL]

I am going on my honeymoon to disney world and as it happens its a trip of firsts! My first time to disney world and my first time going to the spa. The only problem is I am a large overweight woman and truthfully I just don't want to offend anyone. Does anyone have any advice for me? About what to bring or wear or maybe just words of wisdom? I want to relax because my life is pretty stressful but I don't know if I can relax If I'm worried about grossing someone out.