At just over 2,500 feet, it's the highest point on the TMT. In spring, look for red currant blooming here. From Tom's Crossing, the West Tiger #2 Trail heads steeply uphill providing another way to reach that summit. Continue down the TMT on many switchbacks and, in about 0.3 mile, note the junction with the K3 Trail.
I rarely show up more than 1.5 ahead of time. Another idea: technically, the ticket counters usually open 24 hrs before your flight, and sometimes this is the only way to easily get special seats like exit rows.
Domestic - 90 minutes before your flight International - 120 minutes before your flight BUT..if you're traveling on a heavy day (ie Wed, Thrus night, Friday, Saturday) during high capacity times (mid-day thru early evening) then show up at leastr 120 min early for domestic, and 160 minutes for international flights.