It's always a drag to lose a substantial portion of your bankroll on Day One. That's why several gambling authors, Jean Scott among them, recommend dividing your bankroll by the number of days you will be playing/staying, and then "retiring" the relevant portion at the end of a given day, win or lose. For instance: you have a $2000 trip bankroll and you're staying a week. You decide to do six days of play and one "break day" when you might see a show, play golf, etc. without gambling. So you have six "play days," and you allocate $350 for each. That's your daily bankroll, and you don't exceed it. At the end of the day, you put away whatever's left (or stash the daily roll plus your winnings) and don't touch it for the rest of the trip.
I find that there are two beneficial components to this approach. One, my action is at the same level on any given day no matter what my results have been on previous days. Two, my mindset and enjoyment aren't affected nearly as much. I can bank my wins (however modest) and don't have to chase my losses (which will be capped on any given day).
That's what I would do if I were in your shoes. You got massacred, and the reality is that you won't get even for the rest of your trip. So don't try. Evaluate your remaining bankroll, and divide it by the number of "play days" remaining. Limit your play each day to that amount. Yes, you're going to have to dial it back, in terms of limits and maybe play hours. That's much better on the psyche than suffering further substantial losses. Maybe your small daily bankroll won't withstand $15 minimum table games. Fine. Don't try. Play some bingo or nickel video poker. The idea is to make sure you get to enjoy the rest of your trip without exceeding your original expenditure plans. And of course, if you have LVA coupons, doing a coupon run is an excellent way to burn up time and make a little profit--and it's fun.
As a "for instance," Emerald Island gives $20 cashback for $1400 coin-in on Tuesdays. They have 99%+ video poker in denominations as low as one penny. I can go there with $100 and play all day--and I'll earn enough points for lunch. A couple of trips ago, I got absolutely pounded for minus $1100 on the first two days. I then decided that it was 50 cents a hand video poker for the rest of the trip. And wouldn't you know it--a 12X royal on Ultimate X got me even.
So be a low roller and forget your losses so far. Your mindset should be to have as much fun as possible with your remaining bankroll, and don't even think about getting even. That's my advice.