There are lots of food options in addition to what your tour operator provides. I recommend you become familiar with Arabic cuisine, and know which dishes you enjoy. Arabic food is lighter. Hajj is busy and you want to maintain a light stomach. Most tour groups provide a mix of Arabic and other food choices. The food hall in the clock tower has a lot of American chains in addition to local food.
Arafat is the key day for your prayers. It can feel like an exam, but if you prepare and invest in preparing your and your family's dua list you will be ready. If your tour group has a campsite you will most likely remain in the camp for the entire day. Very good if you have trouble walking or trouble being in the sun all day. The sermon is available to listen to, bring a bluetooth speaker to play for your other friends or listen on your headphones https://arafatsermon.info/ If you don't have time to listen to it, it is recorded and you can listen after your Hajj to revisit your experience.