Across:
1 Keep in mind (HOLD AN OPINION) hotel (H-) is not modern (-OLD) and (and) not finished (d) (‘and’ without ‘d’ = AN) – and that’s possibly a view widely shared! (OPINION) (HOLD AN OPINION),
10 Cuts to a (cuts to a = OUTCAST) disturbance (= anagram indicator) produced by pariah (OUTCAST),
11 Knight (Sir = RIS-) sends back (= reversal indicator) German (-OTTO) (RISOTTO) dish from Italian kitchen (RISOTTO),
12 Challenge (DARE) borders on the danse macabre (borders on the ‘danse macabre’ = DARE),
13 On all sides (‘hold’ on all sides of today’s grid = HOLDS) and bottoms of the boat (HOLDS),
15 Get to grip (HOLD) with most of 13 across (most of ‘holds’ = HOLD),
17 Any (any = NAY) problem (= anagram indicator) with the word coming out of opposition? (NAY),
19 Knocks over (= reversal indicator) container (pan = NAP-) with the French (the = -LES) (NAPLES) port (NAPLES),
21 Took advantage of local (MILKED) motorway (MI-) connecting Limerick (-L-), Kildare (-KE-) and Dublin (-D) (MILKED),
22 Note in a (note in a = ETONIAN) composition (= anagram indicator) by one who got an education in England (ETONIAN),
23 Certainly remove rat (‘certainly’ remove ‘rat’ = ceinly = NICELY) with Grace (with grace = NICELY),
25 Some endless (‘some’ endless = MOS-) retraction (= reversal indicator) by milk producer (-COW) (MOSCOW) in Eastern Europe (MOSCOW),
27 The cost (FEE) invested in wildlife environments (invested in ‘wildlife environments’ = FEE),
29 Leo is no longer in the lineout (‘Leo’ is no longer in the ‘lineout’ = inut = UNIT) for company (UNIT),
30 British surprise (Cor! = COR-) soldier (-GI) (CORGI) in Welsh cardigan (Welsh cardigan CORGI dog),
31 Inkling (IDEA) of what’s in splendid eatery (what’s in ‘splendid eatery’ = IDEA),
34 Get the message (REALISE), Earl is (Earl is = REALIS-) travelling (= anagram indicator) to Spain (-E) (REALISE),
35 Making a comeback (= reversal indicator) – Sting (con = NO C-) and (-AN D-) The Police at the Centre (‘The Police’ at the centre = -O) (NO CAN DO) locally? That ain’t going to happen! (NO CAN DO),
36 Stitches up (HOLDS TOGETHER) The Nelsons, for instance (The Nelsons, for instance = half-nelson + full nelson = HOLDS in wrestling), to get her (‘to get her’ = TOGETHER) (HOLDS TOGETHER).
Down:
2 Motion picture released in time (‘motion picture’ released ‘in time’ = otopcur = OUTCROP) provided exposure for The Rock (OUTCROP),
3 Some characters alongside a leadership (some characters ‘alongside a leadership’ = DEAL) to do the business (DEAL),
4 NATO in (Nato in = NATION) trouble (= anagram indicator) with Russia, for one (NATION),
5 Making fun of (PARODY) staff (staff/stick = -ROD-) consumed by wages (PA-Y) (PARODY),
6 Sample of the T-bone steaks (sample of the ‘T-bone steaks’ = NEST) or chicken box (NEST),
7 View (OUTLOOK) of ruffian (lout) losing the head (l) (‘lout’ without ‘l’ = OUT-) with peer (-LOOK) (OUTLOOK),
8 Put in jail (HOLD) for article (AN) on hearing? (INQUIRY) (HOLD AN INQUIRY) Get Charleton, Smithwick or Morris to look into it! (Charleton, Smithwick or Morris judicial inquiries/ tribunals = HOLD AN INQUIRY),
9 Supports (HOLDS) county (DOWN) leader and (leader ‘and’ = A) one’s position (JOB) (HOLDS DOWN A JOB) – is it Labour’s? (labours/works = HOLDS DOWN A JOB),
14 Run deal (run deal = LAUNDER) freely (= anagram indicator) with clean money? (LAUNDER),
16 Embraced by James Lee Roberts (‘sleer’ embraced by ‘James Lee Roberts’) back (= reversal indicator) (sleer = REELS) at the ceilidh (REELS),
18 Child (MINOR) produces main course with no sauce (‘main course’ with no ‘sauce’ = minor = MINOR),
20 Auden left unsteady (‘Auden’ left ‘unsteady’ = sty = STY), messy place (STY),
21 Relative (MAM) cover-up in referendum a myth (cover-up in ‘referendum a myth’ = MAM),
24 Most of (k) the literature (chick lit) (‘chick’ without ‘k’ = CHIC-) previously (-AGO) (CHICAGO) in America (CHICAGO),
26 Dance (dance = CADEN-) off (= anagram indicator) starts with coordinated entertaining (starts with ‘coordinated entertaining’ = -CE) (CADENCE) and has a rhythmical effect (CADENCE),
27 Woods (FOREST) alarms the golfers (warning on the golf course is FORE-) on first two at St Andrews (first two letters at “St Andrews” = -ST) (FOREST),
28 Get going without it (“get going” without “it” = gegong = EGGNOG) for Christmas drink (EGGNOG),
32 Sample of layer in dermis (sample of ‘layer in dermis’ = RIND) of skin (RIND),
33 Characters from Lewis, Cotton Club (characters from ‘Lewis, Cotton Club’ = SCOT) and from Shetland (SCOT).