```python
from typing import List, Tuple

class ReserveLotsResult:
    def __init__(self, picks: List[Tuple[int, int, int]], draws: List[Tuple[int, int, int]], short: List[Tuple[int, int]]):
        self.picks = picks
        self.draws = draws
        self.short = short

def reserve_lots(lots: List[Tuple[int, str, int]], orders: List[Tuple[int, int]]) -> ReserveLotsResult:
    if not lots or not orders:
        return ReserveLotsResult([], [], [])

    lots.sort(key=lambda x: (x[1], x[0]))  # Sort lots by use-by date and lot id
    orders.sort(key=lambda x: x[1])  # Sort orders by units wanted

    picks = []
    draws = []
    short = []

    for order_id, units_wanted in orders:
        units_taken = 0
        for lot_id, use_by_date, units_on_hand in lots:
            if units_on_hand > 0:
                units_taken = min(units_wanted, units_on_hand)
                lots[lot_id] = (lot_id, use_by_date, units_on_hand - units_taken)
                picks.append((order_id, lot_id, units_taken))
                units_wanted -= units_taken
                if units_wanted == 0:
                    break
        if units_wanted > 0:
            short.append((order_id, units_wanted))

    return ReserveLotsResult(picks, draws, short)
```