Just a word of advice: if you choose to try the tablets or drops, try them out at home a week or so before your trip. For some people they work, for some they do not. My daughter can tolerate the lactose-free milk in small amounts like for use in cooking but the tablets don't work for her at all. On our last trip, she thought she could take the pills and get away with a few "forbidden" treats while at WDW; she spent an entire day at MGM doubled over in pain and getting to know the location of every restroom on property. Not a fun day. Just so ya know...