I guess Boo wouldn't be able to go for the eyes on that one...
I started Hordes Of The Underdark yesterday. I have been enjoying it immensely. I did not realize that there was an npc who would give you the rod of resurrection before you went in. Nor did I know you could go up and out of the inn and into the city to shop. I just went straight in. Eventually I went back just to see if I could. Thankfully you can do that. I was wondering what I would do with all the loot I picked up if not.
I also finally figured out how the teleport thing works. I wish I had realized that to start with too.
Wow, there is a lot of loot! I don't really feel bad about losing all my gear to start with. Well, not since I used the console to get some of it back, like my armor and helmet. I just found a pair of uber monk gloves that adds a ton of damage. Plus I think a +4 belt of Agility. January is really geared up already.
I have also been solo'ing it with no problem. I got the rod of resurrection after going back out once and then heading back in, and resurrected Daelan and Sharwyn. But I did not bother teaming up. The same with Deekin. It is kind of fun going it alone in this game. It's a first. January just hit level 18, the highest level I have ever had a character in any D&D game.
The lady in the cellar (White Thelma or something like that, IIRC) sells some stuff, but yeah, the shopkeepers outside the tavern have much better stuff. Just wait until you get even further into the DLC. You get some crazy powerful stuff. I remember finding a decent amount of monk equipment, actually, one being called Gloves of the Hin Fist +7. The loot definitely mitigates the blow of losing your equipment, fortunately.
It took me a while to figure out how the Relic of the Reaper (the teleporter thing) works too.
January sure isn't someone to be trifled with. If 18 is the highest you have ever been in D&D, you're going to blow that personal record out of the water at the end of HOTu. Eliza Maddox was level 18 after the main campaign and Shadows of Undrentide, and at the end of Hordes of the Underdark she was level 27. And that was always with a companion (it is possible to have two at the same time in HOTU), so it'll be interesting to see what January ends up being when she is all done since she will have all the XP to herself. But she has her work cut out for her in chapters 2 and 3, that's for sure.
Deekin really endeared himself to me in SOU, and I was somewhat surprised he popped up again in HOTU. So I took him along again and eventually got my second companion to join us later in the DLC. The second companion, however...had some seriously wonky AI. I'll leave it at that for now so I don't spoil anything.
I remember Deekin from Neverwinter Nights 2. He is a companion and a merchant, and I liked him in that. I also remember him from when I did SOU with a previous character. I love his horrible singing!

I skipped SOU with January, so she might not get as high level Eliza did. I was afraid of getting burned out on the game after the original campaign, which often happens since it is so long. I am glad I stuck it out to finally do HOTU.