Vacationing while pregnant with twins

I'm going to Disneyland when I'll be 14 weeks, I know what rides I can and cannot ride as I was just there when I was 9 weeks. I live in Utah and will be flying out. Anyways, I walked a ton at 9 weeks, had a u/s at 10 weeks and babies were perfect. I am worried about something going wrong since I'll be 14 weeks this time. I don't want to do too much. Any advice?