WHAT DOES TRAVEL GUIDE REQUIREMENTS MEAN?

I’m wanting to do a a single-man or woman hike to Mt Bromo in May well. What will be the advised continue to be there if time will not be of a concern to me. Finally, would early to mid May be additional suited or mid to late May well.I’m sorry but I didn’t extravagant coughing on sulfur for 20 minutes to shoot a long exposure on the blue fla